fix: typo react-native.config.json -> react-native.config.js

Author: johnf

packages/create-react-native-library/templates/common/$package.json

@@ -24,7 +24,7 @@
     "ios",
     "cpp",
     "*.podspec",
-    "react-native.config.json",
+    "react-native.config.js",
     "!ios/build",
     "!android/build",
     "!android/gradle",