runtime(optwin): fix tabpanel typo in optwin

related: #17555

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/optwin.vim b/runtime/optwin.vim
index 2f17839..1aabf69 100644
--- a/runtime/optwin.vim
+++ b/runtime/optwin.vim
@@ -1,7 +1,7 @@
 " These commands create the option window.
 "
 " Maintainer:	The Vim Project <https://github.com/vim/vim>
-" Last Change:	2025 May 14
+" Last Change:	2025 Jun 16
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " If there already is an option window, jump to that one.
@@ -1455,7 +1455,7 @@
   call <SID>OptionG("mzschemegcdll", &mzschemegcdll)
 endif
 if has("tabpanel")
-  call <SID>AddOption("showtabpanel", gettext("0, 1 or 2; when to use a tab pages in tabpanel"))
+  call <SID>AddOption("showtabpanel", gettext("0, 1 or 2; when to use the tabpanel"))
   call <SID>AddOption("tabpanel", gettext("custom tab pages in tabpanel"))
   call <SID>AddOption("tabpanelopt", gettext("options for using tabpanel"))
 endif