patch 9.1.0105: Style: typos found

Problem:  Style: typos found
Solution: correct them
          (zeertzjq)

closes: #14023

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_utf8_comparisons.vim b/src/testdir/test_utf8_comparisons.vim
index 20b5762..2c1972b 100644
--- a/src/testdir/test_utf8_comparisons.vim
+++ b/src/testdir/test_utf8_comparisons.vim
@@ -93,7 +93,7 @@
   call assert_equal(["ABCD", "", "defg"], getline(1,3))
 endfunc
 
-" test that g~, ~ and gU correclty upper-cases ß
+" test that g~, ~ and gU correctly upper-cases ß
 func Test_uppercase_sharp_ss()
   new
   call setline(1, repeat(['ß'], 4))