fix(prettier): Properly handle lint-stage files (#6970)

Now handles top level files and recursive files in folders.

Set max line length to be 100

spec/EnableExpressErrorHandler.spec.js

@@ -1,7 +1,7 @@
 const request = require('../lib/request');
 
 describe('Enable express error handler', () => {
-  it('should call the default handler in case of error, like updating a non existing object', async (done) => {
+  it('should call the default handler in case of error, like updating a non existing object', async done => {
     const parseServer = await reconfigureServer(
       Object.assign({}, defaultConfiguration, {
         enableExpressErrorHandler: true,