runtime(doc): Fix style in documents

closes: #15801

Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index ff80936..286dcbb 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.1.  Last change: 2024 Sep 28
+*syntax.txt*	For Vim version 9.1.  Last change: 2024 Oct 05
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2196,7 +2196,7 @@
 
 
 JSON			*json.vim* *ft-json-syntax* *g:vim_json_conceal*
-					       *g:vim_json_warnings*
+						*g:vim_json_warnings*
 
 The json syntax file provides syntax highlighting with conceal support by
 default. To disable concealment: >