Use shorter URL (docs.kernel.org) so that manual entry does not
have too long a line. The debian troff checker would fail when
doing make check.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
locally terminated traffic for the given DSA switch user port. For a
description of which network interfaces are suitable for serving as conduit
interfaces of this user port, please see
-https://www.kernel.org/doc/html/latest/networking/dsa/configuration.html#affinity-of-user-ports-to-cpu-ports
+https://docs.kernel.org/networking/dsa/configuration.html#affinity-of-user-ports-to-cpu-ports
as well as what is supported by the driver in use.
.sp