Make a few content fixes/additions to tap(4) manual page.
Make a few content fixes/additions to tap(4) manual page.

PR:		36985
Submitted by:	Hiten Pandya <hiten@uk.FreeBSD.org>
MFC after:	4 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase