updated port range specification to match existing code
diff --git a/iptables.8 b/iptables.8
index 176df72..38f14ac 100644
--- a/iptables.8
+++ b/iptables.8
@@ -309,13 +309,11 @@
These extensions are loaded if `--protocol tcp' is specified, and no
other match is specified. It provides the following options:
.TP
-.BR "--source-port " "[!] [\fIport[:port]\fP] or [\fIport[-port]]\fP]"
+.BR "--source-port " "[!] [\fIport[:port]\fP]"
Source port or port range specification. This can either be a service
name or a port number. An inclusive range can also be specified,
using the format
-.IR port : port
-or
-.IR port - port .
+.IR port : port .
If the first port is omitted, "0" is assumed; if the last is omitted,
"65535" is assumed.
If the second port greater then the first they will be swapped.
@@ -323,7 +321,7 @@
.B --sport
is an alias for this option.
.TP
-.BR "--destination-port " "[!] [\fIport[:port]\fP] or [\fIport[-port]]\fP"
+.BR "--destination-port " "[!] [\fIport[:port]\fP]"
Destination port or port range specification. The flag
.B --dport
is an alias for this option.
@@ -357,13 +355,13 @@
These extensions are loaded if `--protocol udp' is specified, and no
other match is specified. It provides the following options:
.TP
-.BR "--source-port " "[!] [\fIport[:port]\fP] or [\fIport[-port]]\fP"
+.BR "--source-port " "[!] [\fIport[:port]\fP]"
Source port or port range specification.
See the description of the
.B --source-port
option of the TCP extension for details.
.TP
-.BR "--destination-port " "[!] [\fIport[:port]\fP] or [\fIport[-port]]\fP"
+.BR "--destination-port " "[!] [\fIport[:port]\fP]"
Destination port or port range specification.
See the description of the
.B --destination-port