Update Registration Features button to reflect new features

What does this MR do and why?

This MR adds link to the documentation for checking new feature additions.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

1. In local gdk go to http://localhost:3000/admin/application_settings/metrics_and_profiling
2. Click on Expand button for Usage statistics, You should see For a list of included Registration Features, see the documentation. text at the bottom.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #414368 (closed)