[NETFILTER]: Update modules' descriptions

Updates the MODULE_DESCRIPTION() tags for all Netfilter modules,
actually describing what the module does and not just
"netfilter XYZ target".

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 6a9e2a3..e00ecd9 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -309,7 +309,7 @@
 module_init(connlimit_mt_init);
 module_exit(connlimit_mt_exit);
 MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>");
-MODULE_DESCRIPTION("netfilter xt_connlimit match module");
+MODULE_DESCRIPTION("Xtables: Number of connections matching");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ipt_connlimit");
 MODULE_ALIAS("ip6t_connlimit");