Back in our old 'arm' days users could configure us through a file at ~/.armrc.
Nyx changed this location to ~/.nyx/config but continued to call it a 'nyxrc'.
Caught thanks to Sai...

  https://github.com/torproject/nyx/pull/27

Mostly this changes internal references, but there are two user visible
changes...

  * This fixes our FAQ which incorrectly said that we read from ~/.nyx/nyxrc.

  * Removes the sample nyxrc path from our man page. Our setup.py no longer
    installs such a file.

This intentionally keeps two references to a nyxrc...

  * Our website's url for a sample is...

      https://nyx.torproject.org/nyxrc.sample

    We can't change this prior to our next release without confusing users.

  * Our legacy changelog entries still call it a nyxrc because that's what it
    was called back then.