chore(social): update social share link

packages/react/.storybook/manager-head.html

@@ -14,10 +14,7 @@
   property="og:description"
   content="This is the React implementation of the Carbon Design System. Carbon is a series of individual styles and components, that when combined make beautiful, intuitive designs."
 />
-<meta
-  property="og:image"
-  content="https://media.github.ibm.com/user/525/files/59e3bfde-b990-11e7-87ef-072e89a87719"
-/>
+<meta property="og:image" content="https://i.postimg.cc/wBFqw43s/share-1.png" />
 <meta property="og:url" content="http://react.carbondesignsystem.com" />
 
 <!-- Favicon -->
@@ -26,6 +23,10 @@
 <!-- Social -->
 <meta name="twitter:card" content="summary_large_image" />
 <meta name="twitter:image:alt" content="Carbon Design System" />
+<meta
+  name="twitter:image"
+  content="https://i.postimg.cc/wBFqw43s/share-1.png"
+/>
 <meta name="twitter:site" content="@_carbondesign" />
 
 <!-- Storybook override -->