runtime: Fix typos in various files

closes: #12836

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Viktor Szépe <viktor@szepe.net>
diff --git a/runtime/ftplugin/debchangelog.vim b/runtime/ftplugin/debchangelog.vim
index 062fc05..dca7f73 100644
--- a/runtime/ftplugin/debchangelog.vim
+++ b/runtime/ftplugin/debchangelog.vim
@@ -122,7 +122,7 @@
     normal! 1G0
     call search(')')
     normal! h
-    " ':normal' doens't support key annotation (<c-a>) directly.
+    " ':normal' doesn't support key annotation (<c-a>) directly.
     " Vim's manual recommends using ':exe' to use key annotation indirectly (backslash-escaping needed though).
     exe "normal! \<c-a>"
     call setline(1, substitute(getline(1), '-\$\$', '-', ''))