runtime(lynx): Update for Lynx 2.8.9 (#13510)

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/ftplugin/lynx.vim b/runtime/ftplugin/lynx.vim
index b76c69f..bf8410d 100644
--- a/runtime/ftplugin/lynx.vim
+++ b/runtime/ftplugin/lynx.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin file
 " Language:	Lynx Web Browser Configuration
 " Maintainer:	Doug Kearns <dougkearns@gmail.com>
-" Last Change:	2022 Sep 09
+" Last Change:	2023 Nov 09
 
 if exists("b:did_ftplugin")
   finish
@@ -18,7 +18,7 @@
 let b:undo_ftplugin = "setl cms< com< fo<"
 
 if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
-  let b:browsefilter = "Lynx Configuration Files (lynx.cfg .lynxrc)\tlynx.cfg;.lynxrc\n" ..
+  let b:browsefilter = "Lynx Configuration Files (lynx.cfg, .lynxrc)\tlynx.cfg;.lynxrc\n" ..
 	\	       "All Files (*.*)\t*.*\n"
   let b:undo_ftplugin ..= " | unlet! b:browsefilter"
 endif