patch 8.2.2160: various typos

Problem:    Various typos.
Solution:   Fix spelling mistakes. (closes #7494)
diff --git a/src/testdir/test_python2.vim b/src/testdir/test_python2.vim
index ba73c12..afefd10 100644
--- a/src/testdir/test_python2.vim
+++ b/src/testdir/test_python2.vim
@@ -3692,7 +3692,7 @@
   call assert_equal(expected, getline(2, '$'))
   close!
 
-  " Try to import a non-existing moudle with a dot (.)
+  " Try to import a non-existing module with a dot (.)
   call AssertException(['py import a.b.c'], 'ImportError:')
 endfunc