There's no mkpasswd(8) man page any more. Replace Xr with plain name.

usr.sbin/pwd_mkdb/pwd_mkdb.8

@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd March 25, 2023
+.Dd April 19, 2025
 .Dt PWD_MKDB 8
 .Os
 .Sh NAME
@@ -145,8 +145,7 @@ the password file:
 .Sh COMPATIBILITY
 Previous versions of the system had a program similar to
 .Nm ,
-.Xr mkpasswd 8 ,
-which built
+mkpasswd, which built
 .Xr dbm 3
 style databases for the password file but depended on the calling programs
 to install them.