Cleanup: Prefer React.Element over React$?Element

Reviewed By: vjeux

Differential Revision: D4013049

fbshipit-source-id: 18a447fdbc584418d6a51770363bcd221e7fb7dc

Examples/UIExplorer/js/GeolocationExample.js

@@ -39,7 +39,7 @@ exports.description = 'Examples of using the Geolocation API.';
 exports.examples = [
   {
     title: 'navigator.geolocation',
-    render: function(): ReactElement<any> {
+    render: function(): React.Element<any> {
       return <GeolocationExample />;
     },
   }