Adds section on troubleshooting updated URLs

Alexandr Tanaynorequested to merge
docs-troubleshooting-updated-geo-url into master

What does this MR do and why?

This doc MR adds troubleshooting section describing what should be done if the Primary Geo URL was changed or updated from http to https.

It is based on the troubleshooting done in this internal ZD ticket.

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