Rename developers modules with hypens

app/soapbox/features/developers/index.tsx

@@ -3,8 +3,8 @@ import React from 'react';
 import { getSettings } from 'soapbox/actions/settings';
 import { useAppSelector } from 'soapbox/hooks';
 
-import DevelopersChallenge from './developers_challenge';
-import DevelopersMenu from './developers_menu';
+import DevelopersChallenge from './developers-challenge';
+import DevelopersMenu from './developers-menu';
 
 const Developers: React.FC = () => {
   const isDeveloper = useAppSelector((state) => getSettings(state).get('isDeveloper'));