Update content/en/docs/demo/services/react-native-app.md

Co-authored-by: Tiffany Hrabusa <[email protected]>

Author: jpmunz

content/en/docs/demo/services/react-native-app.md

@@ -13,7 +13,7 @@ file-based routing to layout the screens for the app.
 ## Instrumentation
 
 The application uses the OpenTelemetry packages to instrument the application at
-the JS layer
+the JS layer.
 
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