update examples to TS only

Author: mongodben

examples/react-native/__tests__/js/app-services/app-provider.test.jsx renamed to examples/react-native/__tests__/ts/app-services/app-provider.test.tsx

@@ -35,8 +35,8 @@ to the ``id`` prop of the ``AppProvider``.
 Wrap any components that need to access the App with the ``AppProvider``.
 
 
-.. literalinclude:: /examples/generated/react-native/js/app-provider.test.snippet.app-provider.jsx
-   :language: javascript
+.. literalinclude:: /examples/generated/react-native/ts/app-provider.test.snippet.app-provider.tsx
+   :language: typescript
 
 .. _react-native-app-retrieve-client:
 
@@ -47,8 +47,8 @@ All components wrapped within an ``AppProvider`` can access the :js-sdk:`App <Re
 client with the ``useApp()`` hook. Using the App, you can authenticate users
 and access App Services.
 
-.. literalinclude:: /examples/generated/react-native/js/use-app.test.snippet.use-app.jsx
-   :language: javascript
+.. literalinclude:: /examples/generated/react-native/ts/use-app.test.snippet.use-app.tsx
+   :language: typescript
 
 .. _react-native-retrieve-client-outside-provider:
 
@@ -59,7 +59,7 @@ To retrieve an instance of the App Client from anywhere in your application,
 instantiate a new instance of :js-sdk:`Realm.App() <Realm.App.html>`
 from the ``realm`` package, then pass in your ``App ID``.
 
-.. code-block:: javascript
+.. code-block:: typescript
 
    import Realm from "realm";