runtime(doc): make examples verbatim to prevent conceal/tag parsing

closes: #17437

Signed-off-by: Yochem van Rosmalen <git@yochem.nl>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/usr_11.txt b/runtime/doc/usr_11.txt
index 9ba6f44..19851b5 100644
--- a/runtime/doc/usr_11.txt
+++ b/runtime/doc/usr_11.txt
@@ -1,4 +1,4 @@
-*usr_11.txt*	For Vim version 9.1.  Last change: 2020 Oct 25
+*usr_11.txt*	For Vim version 9.1.  Last change: 2025 Jun 03
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -127,7 +127,7 @@
 	vim -r .help.txt.swo
 
 This is also handy when the swap file is in another directory than expected.
-Vim recognizes files with the pattern *.s[uvw][a-z] as swap files.
+Vim recognizes files with the pattern "*.s[uvw][a-z]" as swap files.
 
 If this still does not work, see what file names Vim reports and rename the
 files accordingly.  Check the 'directory' option to see where Vim may have