patch 9.1.0464: no whitespace padding in commentstring option in ftplugins

Problem:  no whitespace padding in commentstring option in ftplugins
Solution: Change default to include whitespace padding, update
          existing filetype plugins with the new default value
          (Riley Bruins)

closes: #14843

Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/ftplugin/odin.vim b/runtime/ftplugin/odin.vim
index 9d94a57..c0ad262 100644
--- a/runtime/ftplugin/odin.vim
+++ b/runtime/ftplugin/odin.vim
@@ -1,10 +1,11 @@
 vim9script
 
 # Vim filetype plugin file
-# Language: Odin
-# Maintainer: Maxim Kim <habamax@gmail.com>
-# Website: https://github.com/habamax/vim-odin
-# Last Change: 2024-01-15
+# Language:	Odin
+# Maintainer:	Maxim Kim <habamax@gmail.com>
+# Website:	https://github.com/habamax/vim-odin
+# Last Change:	2024 Jan 15
+#		2024-May 23 by Riley Bruins <ribru17@gmail.com> ('commentstring')
 
 if exists("b:did_ftplugin")
     finish
@@ -16,5 +17,5 @@
       \ .. '| setlocal suffixesadd<'
 
 setlocal suffixesadd=.odin
-setlocal commentstring=//%s
+setlocal commentstring=//\ %s
 setlocal comments=s1:/*,mb:*,ex:*/,://