ovs-ofctl.8.in: Fix indentation.

This extraneous .RE caused the indentation for the subsequent actions to
drop back an extra step, fix it.

Fixes: 8e53fe8 ("Add connection tracking mark support.")
Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Ben Pfaff <blp@ovn.org>

utilities/ovs-ofctl.8.in

@@ -1759,8 +1759,6 @@ same IP message.
 Currently, connection tracking is only available on Linux kernels with the
 nf_conntrack module loaded.
 .
-.RE
-.
 .IP \fBdec_ttl\fR
 .IQ \fBdec_ttl(\fIid1\fR[\fB,\fIid2\fR]...\fB)\fR
 Decrement TTL of IPv4 packet or hop limit of IPv6 packet.  If the