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/testdir/test_listdict.vim b/src/testdir/test_listdict.vim
index 3ff2097..b7c8ad7 100644
--- a/src/testdir/test_listdict.vim
+++ b/src/testdir/test_listdict.vim
@@ -373,7 +373,7 @@
   endtry
   call assert_equal('Vim(let):E716: "1500"', str)
 
-  " lookup each items
+  " lookup each item
   for i in range(1500)
     call assert_equal(3000 - i, d[i])
   endfor