Fixed modeline so copilot code doesn't choke.

For whatever reason the # vim: <settings> was foiling it. Tested and
appears to work now.

Author: koyae

autoload/copilot/client.vim

@@ -778,4 +778,4 @@ augroup copilot_close
   endif
 augroup END
 
-# vim: sw=0 ts=2 et
+" vim: sw=0 ts=2 et