runtime(doc): Fix typos in several documents

closes: #15034

Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 28dd7a3..6215240 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt*  For Vim version 9.1.  Last change: 2024 Jun 10
+*version9.txt*  For Vim version 9.1.  Last change: 2024 Jun 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -31694,7 +31694,7 @@
 This release has hundreds of bug fixes, there are a few new features and there
 are many minor improvements.
 
-Vim9 classes
+Vim9 classes ~
 ------------
 Support for classes and objects in a Vim9 script are added.  This is described
 in |vim9-class|.  The following features are supported:
@@ -41597,7 +41597,7 @@
 
 |hl-MsgArea|		highlighting of the Command-line and messages area
 |hl-PmenuMatch|		Popup menu: highlighting of matched text
-|hl-PmenuMatchSel|     	Popup menu: highlighting of matched text in selected
+|hl-PmenuMatchSel|	Popup menu: highlighting of matched text in selected
 			line
 
 Commands: ~