fix: text found after endfunction

The argument after endfunction can only be (from `:h :endfunction`):
- | command       command to execute next
- \n command      command to execute next
- " comment       always ignored
- anything else   ignored, warning given when 'verbose' is non-zero

autoload/editorconfig_core/ini.vim

@@ -190,7 +190,7 @@ function! s:parse(config_filename, target_filename, lines)
     endif
 
     return {'root': l:is_root, 'options': l:options}
-endfunction!
+endfunction
 
 " }}}1
 " === Helpers =========================================================== {{{1