runtime(editorconfig): set omnifunc to syntaxcomplete func

closes: #16419

Signed-off-by: Yochem van Rosmalen <git@yochem.nl>
Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/ftplugin/editorconfig.vim b/runtime/ftplugin/editorconfig.vim
index 6d43735..1693a95 100644
--- a/runtime/ftplugin/editorconfig.vim
+++ b/runtime/ftplugin/editorconfig.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin
 " Language:	EditorConfig
 " Maintainer:	Riley Bruins <ribru17@gmail.com>
-" Last Change:	2024 Jul 06
+" Last Change:	2025 Jan 10
 
 if exists('b:did_ftplugin')
   finish
@@ -10,4 +10,6 @@
 
 setl comments=:#,:; commentstring=#\ %s
 
-let b:undo_ftplugin = 'setl com< cms<'
+setl omnifunc=syntaxcomplete#Complete
+
+let b:undo_ftplugin = 'setl com< cms< ofu<'