Chase r296204 by renaming tzsetup(1) to tzsetup(8) in the tests

MFC after: 3 days
X-MFC with: r296204
Sponsored by: EMC / Isilon Storage Division

usr.sbin/etcupdate/tests/tzsetup_test.sh

@@ -196,7 +196,7 @@ $COMMAND -nr -d $WORKDIR -D $TEST > $WORKDIR/testn.out
 
 cat > $WORKDIR/correct.out <<EOF
 Warnings:
-  Needs update: /etc/localtime (required manual update via tzsetup(1))
+  Needs update: /etc/localtime (required manual update via tzsetup(8))
 EOF
 
 echo "Differences for missing /var/db/zoneinfo with -n:"