allow alternative locations for some typeddict method errors

Author: yangdanny97

conformance/tests/typeddicts_class_syntax.py

@@ -30,13 +30,13 @@ def method1(self):  # E
         pass
 
     # Methods are not allowed, so this should generate an error.
-    @classmethod  # E
-    def method2(cls):
+    @classmethod  # E[method2]
+    def method2(cls):  # E[method2]
         pass
 
     # Methods are not allowed, so this should generate an error.
-    @staticmethod  # E
-    def method3():
+    @staticmethod  # E[method3]
+    def method3():  # E[method3]
         pass