Support: Add instruction to change the config
If the idea is not to leave technical stuff out of the support faq, we could add a link to the wiki, how to change torrc in TB at https://support.torproject.org/#tbb-21
If the idea is not to leave technical stuff out of the support faq, we could add a link to the wiki, how to change torrc in TB at https://support.torproject.org/#tbb-21