patch 9.0.1886: Various Typos

Problem:  Various Typos
Solution: Fix Typos

This is a collection of typo related commits.

closes: #12753
closes: #13016

Co-authored-by: Adri Verhoef <a3@a3.xs4all.nl>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: Viktor Szépe <viktor@szepe.net>
Co-authored-by: nuid64 <lvkuzvesov@proton.me>
Co-authored-by: Meng Xiangzhuo <aumo@foxmail.com>
Co-authored-by: Dominique Pellé <dominique.pelle@gmail.com>

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/sound.c b/src/sound.c
index a968ecd..6e949e8 100644
--- a/src/sound.c
+++ b/src/sound.c
@@ -17,7 +17,7 @@
 
 static long	    sound_id = 0;
 
-// soundcb_T is typdef'ed in proto/sound.pro
+// soundcb_T is typedef'ed in proto/sound.pro
 
 struct soundcb_S {
     callback_T	snd_callback;