Improve help information provided on the calendar export page

We have this "How do I subscribe to this calendar from a calendar application (Google/Outlook/Other)?" link to the documentation site in the export calendar page which has been dropped in the prototype mockups.

It was discussed that it may need to be retained or an alternative approach be taken to make it easier for users to know what to do with the exported calendar events via the calendar URL/export file (*.ics file).

Hopefully, we can decide what to do about this issue. Current options:

1. Leave it as it is
2. Remove it
3. Let's try a different approach