Remove trailing spaces

Author: tannewt

supervisor/shared/web_workflow/static/welcome.html

@@ -25,9 +25,9 @@ <h2>Device Info:</h2>
         <dt>IP:</dt>
         <dd><a id="ip"></a></dd>
     </dl>
-    
+
     <h2>Here are other CircuitPython devices on your network:</h2>
     <ul id="devices">
-    </ul>    
+    </ul>
 </body>
 </html>