Create "Learn More" links in Tor Browser manual to explain common Onion Service connection errors
In #19251 (moved) we are creating new error pages when connection to an onion service fails.
These error pages need "Learn More" links pointing to the Tor Browser Manual to give more details about a particular error and possible recovery scenarios.
These details should go in https://tb-manual.torproject.org/onion-services/#troubleshooting with some details for each of the error types