runtime(doc): Fix typos in several documents (#13420)

* Fix typos in several documents
* Update runtime/doc/terminal.txt

Co-authored-by: K.Takata <kentkt@csc.jp>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index 4ee8890..ec2e3fd 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -449,7 +449,8 @@
 m  *+python3*		Python 3 interface |python|
 m  *+python3/dyn*	Python 3 interface |python-dynamic| |/dyn|
 m  *+python3/dyn-stable*
-			Python 3 interface |python-dynamic| |python-stable| |/dyn|
+			Python 3 interface |python-dynamic| |python-stable|
+			|/dyn|
 N  *+quickfix*		|:make| and |quickfix| commands
 N  *+reltime*		|reltime()| function, 'hlsearch'/'incsearch' timeout,
 			'redrawtime' option