fix: change Github Contributor plugin config env vars (#21)

For Github Actions, we can't use any env vars that are prefixed with `GITHUB_` since those are reserved.

README.md

@@ -155,11 +155,11 @@ Only `READ` permissions on repositories are required for the token.
 For example, if your doc site repo was at https://github.com/adobe/gatsby-theme-parliament using the `main` branch, this would be what your `.env` would look like:
 
 ```properties
-GITHUB_TOKEN=YOUR_PERSONAL_ACCESS_TOKEN_HERE
-GITHUB_REPO_OWNER=adobe
-GITHUB_REPO_NAME=gatsby-theme-parliament
-GITHUB_REPO_BRANCH=main
-ROOT=example
+REPO_GITHUB_TOKEN=YOUR_PERSONAL_ACCESS_TOKEN_HERE
+REPO_OWNER=adobe
+REPO_NAME=gatsby-theme-parliament
+REPO_BRANCH=main
+REPO_ROOT=example
 ```
 
 By default, you can omit the `ROOT` env var, and it should use the root folder as the source of the documentation pages. If your site is in a sub-folder, add the relative path as the `ROOT`.

example/.env.example

@@ -1,7 +1,7 @@
-GITHUB_TOKEN=
-GITHUB_REPO_OWNER=adobe
-GITHUB_REPO_NAME=gatsby-theme-parliament
-GITHUB_REPO_BRANCH=main
-ROOT=example
+REPO_GITHUB_TOKEN=
+REPO_OWNER=adobe
+REPO_NAME=gatsby-theme-parliament
+REPO_BRANCH=main
+REPO_ROOT=example
 GATSBY_LAUNCH_SRC=
 GATSBY_LAUNCH_SRC_INCLUDE_IN_DEVELOPMENT=

packages/gatsby-theme-parliament/gatsby-config.js

@@ -131,12 +131,12 @@ module.exports = {
     {
       resolve: `@adobe/gatsby-source-github-file-contributors`,
       options: {
-        root: process.env.ROOT,
+        root: process.env.REPO_ROOT,
         repo: {
-          token: process.env.GITHUB_TOKEN,
-          owner: process.env.GITHUB_REPO_OWNER,
-          name: process.env.GITHUB_REPO_NAME,
-          branch: process.env.GITHUB_REPO_BRANCH
+          token: process.env.REPO_GITHUB_TOKEN,
+          owner: process.env.REPO_OWNER,
+          name: process.env.REPO_NAME,
+          branch: process.env.REPO_BRANCH
         }
       }
     },