mac(4): Mention mac_do(4)

Mention also mac_do(4) in the mac(4) manual page.

Reviewed by:	bapt
Differential Revision: https://reviews.freebsd.org/D48255

share/man/man4/mac.4

@@ -28,7 +28,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd July 25, 2023
+.Dd December 30, 2024
 .Dt MAC 4
 .Os
 .Sh NAME
@@ -54,6 +54,7 @@ Currently, the following MAC policy modules are shipped with
 .It Xr mac_biba 4 Ta "Biba integrity policy" Ta yes Ta boot only
 .It Xr mac_bsdextended 4 Ta "File system firewall" Ta no Ta any time
 .It Xr mac_ddb 4 Ta "ddb(4) interface restrictions" Ta no Ta any time
+.It Xr mac_do 4 Ta "Change command's uid/gid" Ta no Ta any time
 .It Xr mac_ifoff 4 Ta "Interface silencing" Ta no Ta any time
 .It Xr mac_ipacl 4 Ta "IP Address access control" Ta no Ta any time
 .It Xr mac_lomac 4 Ta "Low-Watermark MAC policy" Ta yes Ta boot only
@@ -203,6 +204,7 @@ man page.
 .Xr mac_biba 4 ,
 .Xr mac_bsdextended 4 ,
 .Xr mac_ddb 4 ,
+.Xr mac_do 4 ,
 .Xr mac_ifoff 4 ,
 .Xr mac_ipacl 4 ,
 .Xr mac_lomac 4 ,