Spelling and grammar fixes in code comments and documentation
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index d784aea..765d7c0 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -299,7 +299,7 @@
                               "Error raising socket exception.")
 
     def testSendtoErrors(self):
-        # Testing that sendto doesn't masks failures. See #10169.
+        # Testing that sendto doesn't mask failures. See #10169.
         s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         self.addCleanup(s.close)
         s.bind(('', 0))