[3.10] Fix typos in the Lib directory (GH-28775) (GH-28804)

Fix typos in the Lib directory as identified by codespell.

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>.
(cherry picked from commit 745c9d9dfc1ad6fdfdf1d07420c6273ff67fa5be)

Co-authored-by: Christian Clauss <cclauss@me.com>
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index e716f4d..5f6d9f4 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -324,7 +324,7 @@ def test_match_common(self):
         self.assertFalse(P('b/py').match('b.py'))
         self.assertFalse(P('/a.py').match('b.py'))
         self.assertFalse(P('b.py/c').match('b.py'))
-        # Wilcard relative pattern.
+        # Wildcard relative pattern.
         self.assertTrue(P('b.py').match('*.py'))
         self.assertTrue(P('a/b.py').match('*.py'))
         self.assertTrue(P('/a/b.py').match('*.py'))
@@ -1284,7 +1284,7 @@ def test_is_reserved(self):
         self.assertIs(False, P('/foo/bar').is_reserved())
         # UNC paths are never reserved.
         self.assertIs(False, P('//my/share/nul/con/aux').is_reserved())
-        # Case-insenstive DOS-device names are reserved.
+        # Case-insensitive DOS-device names are reserved.
         self.assertIs(True, P('nul').is_reserved())
         self.assertIs(True, P('aux').is_reserved())
         self.assertIs(True, P('prn').is_reserved())