doc: Update documentation of ssh_userauth_try_publickey()
doc: Update documentation of ssh_userauth_try_publickey()

Signed-off-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

nviennot/libssh,nviennot/libssh,kedazo/libssh,kedazo/libssh,nviennot/libssh,kedazo/libssh,nviennot/libssh,kedazo/libssh