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/tests/YGFlexBasisAuto.test.ts

@@ -5,9 +5,9 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import { Yoga } from "./tools/globals";
+import {Yoga} from './tools/globals';
 
-test("flex_basis_auto", () => {
+test('flex_basis_auto', () => {
   const root = Yoga.Node.create();
 
   expect(root.getFlexBasis().unit).toBe(Yoga.UNIT_AUTO);