patch 9.1.0581: Various lines are indented inconsistently

Problem:  style: Various lines are indented inconsistently
Solution: Retab these lines and correct some comments.
          (zeertzjq)

closes: #15259

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 226c3b8..c595d9d 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt*     For Vim version 9.1.  Last change: 2023 Jul 06
+*index.txt*     For Vim version 9.1.  Last change: 2023 Jul 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -757,7 +757,7 @@
 				   search pattern and Visually select it
 |gP|		["x]gP		2  put the text [from register x] before the
 				   cursor N times, leave the cursor after it
-|gQ|		gQ		    switch to "Ex" mode with Vim editing
+|gQ|		gQ		   switch to "Ex" mode with Vim editing
 |gR|		gR		2  enter Virtual Replace mode
 |gT|		gT		   go to the previous tab page
 |gU|		gU{motion}	2  make Nmove text uppercase