runtime(doc): fix inconsistent indent (#14089)

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/map.txt b/runtime/doc/map.txt
index cf83ffc..1229726 100644
--- a/runtime/doc/map.txt
+++ b/runtime/doc/map.txt
@@ -592,7 +592,7 @@
 last defined.  Example: >
 
 	:verbose map <C-W>*
-        Kitty keyboard protocol: Cleared
+	Kitty keyboard protocol: Cleared
 	n  <C-W>*      * <C-W><C-S>*
 		Last set from /home/abcd/.vimrc