Correct an instance of an erroneous "it's".
Correct an instance of an erroneous "it's".

PR:		docs/59937
Submitted by:	Ada Lim <ada@bsd.org>
MFC After:	1 day

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