[netlify-build] added migration guide to the nav

Author: stayseesong

src/connections/sources/catalog/libraries/mobile/react-native/migration.md

@@ -1,5 +1,6 @@
 ---
 title: React Native 2.0 Migration Guide
+strat: react-native
 ---
 
 If you’re using `analytics-react-native 1.5.1` or older, follow these steps to migrate to `analytics-react-native 2.0`. You can continue to use your React Native source write key for the migration to view historical events.