Fix first self-test (typo)

Author: johnslavik

Lib/test/test_annotationlib.py

@@ -1886,7 +1886,7 @@ def two(_) -> C1 | C2:
         self.assertNotEqual(hash(A.one_f), hash(A.one_f_ga1))
 
         self.assertIsInstance(A.one_f_ga1.__cell__, types.CellType)
-        self.assertIs(A.one_f_ga1.__cell__, A.one_f_ga1.__cell__)
+        self.assertIs(A.one_f_ga1.__cell__, A.one_f_ga2.__cell__)
 
         self.assertEqual(A.one_f_ga1, A.one_f_ga2)
         self.assertEqual(hash(A.one_f_ga1), hash(A.one_f_ga2))