channel: Improve ssh_channel_open_reverse_forward documentation. (cherry picked from commit 23b3c46fd60201147c8a40d4dae5fe86f36bfd86)
channel: Improve ssh_channel_open_reverse_forward documentation.
(cherry picked from commit 23b3c46fd60201147c8a40d4dae5fe86f36bfd86)

miloj/libssh-v0.5,mwgoldsmith/ssh,miloj/libssh-v0.5,mwgoldsmith/ssh,mwgoldsmith/libssh,miloj/libssh-v0.5,miloj/libssh-v0.5,mwgoldsmith/libssh,mwgoldsmith/ssh,mwgoldsmith/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh