Fix hyphens stedda dashes in man pages (per lintian)

man/mosh-client.1

@@ -23,7 +23,7 @@ MOSH_KEY=KEY
 IP PORT
 .br
 .B mosh-client 
--c
+\-c
 .br
 .SH DESCRIPTION
 \fBmosh-client\fP is a helper program for the 
@@ -46,7 +46,7 @@ For constructing new setup wrappers for remote execution facilities
 other than SSH, it may be necessary to invoke \fBmosh-client\fP
 directly.
 
-With the -c option, \fBmosh-client\fP instead prints the number of colors
+With the \-c option, \fBmosh-client\fP instead prints the number of colors
 of the terminal given by the TERM environment variable.
 
 .SH SEE ALSO

man/mosh-server.1

@@ -20,11 +20,11 @@ mosh-server \- server-side helper for mosh
 .SH SYNOPSIS
 .B mosh-server
 new
-[-s]
-[-i IP]
-[-p port]
-[-c colors]
-[-- command...]
+[\-s]
+[\-i IP]
+[\-p port]
+[\-c colors]
+[\-\- command...]
 .br
 .SH DESCRIPTION
 \fBmosh-server\fP is a helper program for the