Update outdated links and fix two broken links

CHANGELOG.md

@@ -1218,7 +1218,7 @@ Each of these changes will continue to work as before with a new warning until t
 - Shallow renderer now returns the rendered output from `render()`. ([@simonewebdesign](https://github.com/simonewebdesign) in [#5411](https://github.com/facebook/react/pull/5411))
 - React no longer depends on ES5 *shams* for `Object.create` and `Object.freeze` in older environments. It still, however, requires ES5 *shims* in those environments. ([@dgreensp](https://github.com/dgreensp) in [#4959](https://github.com/facebook/react/pull/4959))
 - React DOM now allows `data-` attributes with names that start with numbers. ([@nLight](https://github.com/nLight) in [#5216](https://github.com/facebook/react/pull/5216))
-- React DOM adds a new `suppressContentEditableWarning` prop for components like [Draft.js](https://facebook.github.io/draft-js/) that intentionally manage `contentEditable` children with React. ([@mxstbr](https://github.com/mxstbr) in [#6112](https://github.com/facebook/react/pull/6112))
+- React DOM adds a new `suppressContentEditableWarning` prop for components like [Draft.js](https://draftjs.org/) that intentionally manage `contentEditable` children with React. ([@mxstbr](https://github.com/mxstbr) in [#6112](https://github.com/facebook/react/pull/6112))
 - React improves the performance for `createClass()` on complex specs. ([@sophiebits](https://github.com/sophiebits) in [#5550](https://github.com/facebook/react/pull/5550))
 
 

fixtures/attribute-behavior/README.md

@@ -26,6 +26,6 @@ Right now, we use a purple outline to call out cases where the assigned property
 ---
 
 
-This project was bootstrapped with [Create React App](https://github.com/facebookincubator/create-react-app).
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
 
-You can find the guide for how to do things in a CRA [here](https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/template/README.md).
+You can find the guide for how to do things in a CRA [here](https://github.com/facebook/create-react-app/blob/master/packages/cra-template/template/README.md).

fixtures/flight/config/jest/cssTransform.js

@@ -1,7 +1,7 @@
 'use strict';
 
 // This is a custom Jest transformer turning style imports into empty objects.
-// http://facebook.github.io/jest/docs/en/webpack.html
+// https://jestjs.io/docs/en/webpack.html
 
 module.exports = {
   process() {

fixtures/flight/config/jest/fileTransform.js

@@ -4,7 +4,7 @@ const path = require('path');
 const camelcase = require('camelcase');
 
 // This is a custom Jest transformer turning file imports into filenames.
-// http://facebook.github.io/jest/docs/en/webpack.html
+// https://jestjs.io/docs/en/webpack.html
 
 module.exports = {
   process(src, filename) {

packages/react-debug-tools/src/__tests__/ReactDevToolsHooksIntegration-test.js

@@ -133,7 +133,7 @@ describe('React hooks DevTools integration', () => {
   });
 
   // This test case is based on an open source bug report:
-  // facebookincubator/redux-react-hook/issues/34#issuecomment-466693787
+  // https://github.com/facebookincubator/redux-react-hook/issues/34#issuecomment-466693787
   it('should handle interleaved stateful hooks (e.g. useState) and non-stateful hooks (e.g. useContext)', () => {
     const MyContext = React.createContext(1);
 

packages/react-debug-tools/src/__tests__/ReactHooksInspectionIntegration-test.js

@@ -797,7 +797,7 @@ describe('ReactHooksInspectionIntegration', () => {
   });
 
   // This test case is based on an open source bug report:
-  // facebookincubator/redux-react-hook/issues/34#issuecomment-466693787
+  // https://github.com/facebookincubator/redux-react-hook/issues/34#issuecomment-466693787
   it('should properly advance the current hook for useContext', () => {
     const MyContext = React.createContext(1);
 

packages/react-devtools-extensions/popups/deadcode.html

@@ -24,7 +24,7 @@
   This makes its size larger, and causes React to run slower.
   <br />
   <br />
-  Make sure to <a href="https://facebook.github.io/react/docs/optimizing-performance.html#use-the-production-build">set up dead code elimination</a> before deployment.
+  Make sure to <a href="https://reactjs.org/docs/optimizing-performance.html#use-the-production-build">set up dead code elimination</a> before deployment.
 </p>
 <hr />
 <p>

packages/react-devtools-extensions/popups/development.html

@@ -20,7 +20,7 @@
 <p>
   Note that the development build is not suitable for production.
   <br />
-  Make sure to <a href="https://facebook.github.io/react/docs/optimizing-performance.html#use-the-production-build">use the production build</a> before deployment.
+  Make sure to <a href="https://reactjs.org/docs/optimizing-performance.html#use-the-production-build">use the production build</a> before deployment.
 </p>
 <hr />
 <p>

packages/react-devtools-extensions/popups/outdated.html

@@ -21,7 +21,7 @@
   We recommend updating React to ensure that you receive important bugfixes and performance improvements.
   <br />
   <br />
-  You can find the upgrade instructions on the <a href="https://facebook.github.io/react/blog/">React blog</a>.
+  You can find the upgrade instructions on the <a href="https://reactjs.org/blog/">React blog</a>.
 </p>
 <hr />
 <p>

packages/react-devtools-extensions/popups/unminified.html

@@ -23,7 +23,7 @@
   This makes its size larger, and causes React to run slower.
   <br />
   <br />
-  Make sure to <a href="https://facebook.github.io/react/docs/optimizing-performance.html#use-the-production-build">set up minification</a> before deployment.
+  Make sure to <a href="https://reactjs.org/docs/optimizing-performance.html#use-the-production-build">set up minification</a> before deployment.
 </p>
 <hr />
 <p>

packages/react-devtools/README.md

@@ -101,7 +101,7 @@ By default DevTools listen to port `8097` on `localhost`. If you need to customi
 
 Or you could develop with a local HTTP server [like `serve`](https://www.npmjs.com/package/serve).
 
-**The React tab won't show up if the site doesn't use React**, or if React can't communicate with the devtools. When the page loads, the devtools sets a global named `__REACT_DEVTOOLS_GLOBAL_HOOK__`, then React communicates with that hook during initialization. You can test this on the [React website](http://facebook.github.io/react/) or by inspecting [Facebook](https://www.facebook.com/).
+**The React tab won't show up if the site doesn't use React**, or if React can't communicate with the devtools. When the page loads, the devtools sets a global named `__REACT_DEVTOOLS_GLOBAL_HOOK__`, then React communicates with that hook during initialization. You can test this on the [React website](https://reactjs.org/) or by inspecting [Facebook](https://www.facebook.com/).
 
 **If your app is inside of CodePen**, make sure you are registered. Then press Fork (if it's not your pen), and then choose Change View > Debug. The Debug view is inspectable with DevTools because it doesn't use an iframe.
 

packages/react-test-renderer/README.md

@@ -23,4 +23,4 @@ console.log(renderer.toJSON());
 //   children: [ 'Facebook' ] }
 ```
 
-You can also use Jest's snapshot testing feature to automatically save a copy of the JSON tree to a file and check in your tests that it hasn't changed: https://facebook.github.io/jest/blog/2016/07/27/jest-14.html.
+You can also use Jest's snapshot testing feature to automatically save a copy of the JSON tree to a file and check in your tests that it hasn't changed: https://jestjs.io/blog/2016/07/27/jest-14.html.

packages/shared/invokeGuardedCallbackImpl.js

@@ -81,7 +81,7 @@ if (__DEV__) {
     ) {
       // If document doesn't exist we know for sure we will crash in this method
       // when we call document.createEvent(). However this can cause confusing
-      // errors: https://github.com/facebookincubator/create-react-app/issues/3482
+      // errors: https://github.com/facebook/create-react-app/issues/3482
       // So we preemptively throw with a better message instead.
       invariant(
         typeof document !== 'undefined',