Move react-native-codegen/e2e/__tests__/modules/BUCK

Reviewed By: PeteTheHeat

Differential Revision: D25675408

fbshipit-source-id: 97f8070611f7f7707af9bd7dd9c9a59e8ad96125

packages/react-native-codegen/e2e/BUCK

@@ -5,7 +5,7 @@ react_native_module_flow_types_library(
     android_package_name = "com.facebook.fbreact.specs",
     js_srcs = glob(
         [
-            "../../__test_fixtures__/modules/*.js",
+            "./__test_fixtures__/modules/*.js",
         ],
     ),
 )