Issue #16714: use 'raise' exceptions, don't 'throw'.

Patch by Serhiy Storchaka.
diff --git a/Lib/test/test_docxmlrpc.py b/Lib/test/test_docxmlrpc.py
index 716333e..80d1803 100644
--- a/Lib/test/test_docxmlrpc.py
+++ b/Lib/test/test_docxmlrpc.py
@@ -100,7 +100,7 @@
         self.assertEqual(response.status, 200)
         self.assertEqual(response.getheader("Content-type"), "text/html")
 
-        # Server throws an exception if we don't start to read the data
+        # Server raises an exception if we don't start to read the data
         response.read()
 
     def test_invalid_get_response(self):