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/insexpand.c b/src/insexpand.c
index b767b4e..3b06ee0 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -3789,7 +3789,7 @@
 	st.found_all = FALSE;
 	st.ins_buf = curbuf;
 	vim_free(st.e_cpt_copy);
-	// Make a copy of 'complete', if case the buffer is wiped out.
+	// Make a copy of 'complete', in case the buffer is wiped out.
 	st.e_cpt_copy = vim_strsave((compl_cont_status & CONT_LOCAL)
 					    ? (char_u *)"." : curbuf->b_p_cpt);
 	st.e_cpt = st.e_cpt_copy == NULL ? (char_u *)"" : st.e_cpt_copy;