tor-proto: Update CtrlCmd and CtrlMsg docs.
In aa08ede1, the reactor loop was
rewritten to unconditionally read from the CtrlMsg channel, so we need
to adjust the docs (I forgot to update them in !2817 (merged)).
In aa08ede1, the reactor loop was
rewritten to unconditionally read from the CtrlMsg channel, so we need
to adjust the docs (I forgot to update them in !2817 (merged)).