cap_net.3: remove a copypasta

This line appears to have been copied from cap_sysctl.3.  While I'm
here, reorder and reword the description of cap_net_limit a bit.

[skip ci]

MFC after:	2 weeks
Sponsored by:	Axcient
Reviewed by:	oshogbo
Differential Revision: https://reviews.freebsd.org/D42919

lib/libcasper/services/cap_net/cap_net.3

@@ -21,7 +21,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd November 15, 2021
+.Dd December 5, 2023
 .Dt CAP_NET 3
 .Os
 .Sh NAME
@@ -188,17 +188,14 @@ any port will be accepted in the
 .Fn cap_connect
 function.
 .Pp
+The
 .Fn cap_net_limit
-applies a set of sysctl limits to the capability, denying access to sysctl
-variables not belonging to the set.
+will consume and apply the limits.
 .Pp
 Once a set of limits is applied, subsequent calls to
 .Fn cap_net_limit
 will fail unless the new set is a subset of the current set.
 .Pp
-The
-.Fn cap_net_limit
-will consume the limits.
 If the
 .Fn cap_net_limit
 was not called the rights may be freed using