Markdownlint fixes #285

Author: TheNinth7

source/main/data/storage/README.md

@@ -5,7 +5,7 @@ Handles reading from and writing to persistent storage. As of now, the following
 - **JSON Dictionary**: Caches the latest sitemap data for use on app startup.
 - **Sitemap Label**: Stored for display by the _Glance_.
 
-### Further Reading
+## Further Reading
 
 - [Connect IQ Core Topics – Persisting Data](https://developer.garmin.com/connect-iq/core-topics/persisting-data/)
 - [Connect IQ API Docs – `Toybox.Application.Storage`](https://developer.garmin.com/connect-iq/api-docs/Toybox/Application/Storage.html)