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

src/index.js

@@ -13,7 +13,7 @@ import { ParseServerOptions } from './Options';
 import { ParseGraphQLServer } from './GraphQL/ParseGraphQLServer';
 
 // Factory function
-const _ParseServer = function(options: ParseServerOptions) {
+const _ParseServer = function (options: ParseServerOptions) {
   const server = new ParseServer(options);
   return server.app;
 };