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_edit.vim b/src/testdir/test_edit.vim
index 3ce5421..d662f4a 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -1219,7 +1219,7 @@
 endfunc
 
 func Test_edit_MOUSE()
-  " This is a simple test, since we not really using the mouse here
+  " This is a simple test, since we're not really using the mouse here
   CheckFeature mouse
   10new
   call setline(1, range(1, 100))
@@ -1797,7 +1797,7 @@
   close!
   set charconvert&
 
-  " 'charconvert' function doesn't create a output file
+  " 'charconvert' function doesn't create an output file
   func Cconv1()
   endfunc
   set charconvert=Cconv1()