runtime(tex): update Last Change header in syntax script

related: #11271

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/tex.vim b/runtime/syntax/tex.vim
index dc45790..bd47e16 100644
--- a/runtime/syntax/tex.vim
+++ b/runtime/syntax/tex.vim
@@ -4,6 +4,7 @@
 " Former Maintainer: Charles E. Campbell
 " Last Change:	Apr 22, 2022
 "   2024 Feb 19 by Vim Project (announce adoption)
+"   2024 Nov 09 add Number highlight (#11271)
 " Version:	121
 " Former URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_TEX
 "