doc: escape minus sign in manpages

groff formats '-' as a hyphen, and '\-' is needed for a minus.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 11 insertions, 13 deletions

diff --git a/extensions/libipt_REJECT.man b/extensions/libipt_REJECT.man
index d738a3d4..c419a85e 100644
--- a/extensions/libipt_REJECT.man
+++ b/extensions/libipt_REJECT.man
@@ -11,24 +11,22 @@ chains, and user-defined chains which are only called from those
 chains.  The following option controls the nature of the error packet
 returned:
 .TP
-.BI "--reject-with " "type"
+\fB\-\-reject\-with\fP \fItype\fP
 The type given can be
-.nf
-.B " icmp-net-unreachable"
-.B " icmp-host-unreachable"
-.B " icmp-port-unreachable"
-.B " icmp-proto-unreachable"
-.B " icmp-net-prohibited"
-.B " icmp-host-prohibited or"
-.B " icmp-admin-prohibited (*)"
-.fi
-which return the appropriate ICMP error message (\fBport-unreachable\fP is
+\fBicmp\-net\-unreachable\fP,
+\fBicmp\-host\-unreachable\fP,
+\fBicmp\-port\-unreachable\fP,
+\fBicmp\-proto\-unreachable\fP,
+\fBicmp\-net\-prohibited\fP,
+\fBicmp\-host\-prohibited\fP or
+\fBicmp\-admin\-prohibited\fP (*)
+which return the appropriate ICMP error message (\fBport\-unreachable\fP is
 the default).  The option
-.B tcp-reset
+\fBtcp\-reset\fP
 can be used on rules which only match the TCP protocol: this causes a
 TCP RST packet to be sent back.  This is mainly useful for blocking 
 .I ident
 (113/tcp) probes which frequently occur when sending mail to broken mail
 hosts (which won't accept your mail otherwise).
 .PP
-(*) Using icmp-admin-prohibited with kernels that do not support it will result in a plain DROP instead of REJECT
+(*) Using icmp\-admin\-prohibited with kernels that do not support it will result in a plain DROP instead of REJECT