Update Lib/test/test_unittest/test_async_case.py

Author: graingert

Lib/test/test_unittest/test_async_case.py

@@ -488,7 +488,7 @@ def test_loop_factory(self):
         asyncio.set_event_loop_policy(None)
 
         class TestCase1(unittest.IsolatedAsyncioTestCase):
-            loop_factory = asyncio.EvetLoop
+            loop_factory = asyncio.EventLoop
 
             async def test_demo1(self):
                 pass