Move the relay options into the correct man page sections
Some of the relay options aren't under Server Options or Directory Server Options in the man page. We should move them, so it's clear which options are disabled when relay mode is disabled.
Here is the full list of options that we should check:
- DirPort, DirCache, ORPort
- --list-fingerprint, RelayBandwidth*, MaxAdvertisedBandwidth, PerConnBW*, and ServerTransportPlugin
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