Match xplat/yoga/javascript prettier conventions

Summary:
Match Prettier config to match other Meta OSS projects

Didn't update the test generator to use this form yet.

Reviewed By: yungsters

Differential Revision: D45570415

fbshipit-source-id: d5fd791b047debf41c28aecac75fb8dde16da3e3

javascript/src_js/sync.js

@@ -8,4 +8,4 @@
  */
 
 // Fallback for when the export map is not followed
-module.exports = require("./entrypoint/asmjs-sync");
+module.exports = require('./entrypoint/asmjs-sync');