Update `Doing Your Own Relay Measurements`

explaining how to configure tor in the case of guards and non-guards.

Closes #352 (closed)

merged

mentioned in commit f014284a

merged! i will add a follow-up commit cleaning up a few things.

It is also making me realize that we have a bunch of text on the support portal that would work better on the dev portal. There's this text here ("I'm a tor relay operator, and I want to participate in debugging the network"), there's the Tor Browser ones like "Why did you base Tor Browser on Firefox?", there are the Tor ones ("you should change Tor's design to do this other behavior"). None of them really make sense on a pure support portal, but losing them would be sad too. I'm going to open a new separate ticket for this point.

Thanks!

There, I opened #353 for that other idea.