fixed hyphen/minus signs in groff

in manpages, the '-' denotes a hyphen.
for a proper minus, we need to write '\-'

Signed-off-by: IOhannes m zmölnig <[email protected]>

ptp4l.8

@@ -1,6 +1,6 @@
 .TH PTP4l 8 "December 2014" "linuxptp"
 .SH NAME
-ptp4l \- PTP Boundary/Ordinary Clock
+ptp4l - PTP Boundary/Ordinary Clock
 
 .SH SYNOPSIS
 .B ptp4l
@@ -170,7 +170,7 @@ The default is 0 (disabled).
 .B fault_reset_interval
 The time in seconds between the detection of a port's fault and the fault
 being reset. This value is expressed as a power of two. Setting this
-value to -128 or to the special key word "ASAP" will let the fault be
+value to \-128 or to the special key word "ASAP" will let the fault be
 reset immediately.
 The default is 4 (16 seconds).
 .TP
@@ -350,7 +350,7 @@ The default is 0.0.
 .B pi_proportional_exponent
 The kp_exponent constant in the formula used to set the proportional constant of
 the PI controller from the sync interval.
-The default is -0.3.
+The default is \-0.3.
 .TP
 .B pi_proportional_norm_max
 The kp_norm_max constant in the formula used to set the proportional constant of

timemaster.8

@@ -1,7 +1,7 @@
 .TH TIMEMASTER 8 "October 2014" "linuxptp"
 .SH NAME
 
-timemaster \- run NTP with PTP as reference clocks
+timemaster - run NTP with PTP as reference clocks
 
 .SH SYNOPSIS
 
@@ -138,7 +138,7 @@ default value is 0 (1 second).
 Specify the maximum assumed roundtrip delay to the primary source of the time
 in this PTP domain. This value is included in the distance used by
 \fBchronyd\fR in the source selection algorithm to detect falsetickers and
-assign weights for source combining. The default value is 1e-4 (100
+assign weights for source combining. The default value is 1e\-4 (100
 microseconds). With \fBntpd\fR, the \fBtos mindist\fR command can be used to
 set a limit with similar purpose globally for all time sources.
 
@@ -209,7 +209,7 @@ Specify the path to the \fBphc2sys\fR binary. The default value is
 .TP
 .B options
 Specify extra options that should be added to all \fBphc2sys\fR command lines.
-By default, \fB-l 5\fR is added to the command lines.
+By default, \fB\-l 5\fR is added to the command lines.
 
 .SS [ptp4l]
 
@@ -221,7 +221,7 @@ search for the binary in \fBPATH\fR.
 .TP
 .B options
 Specify extra options that should be added to all \fBptp4l\fR command lines. By
-default, \fB-l 5\fR is added to the command lines.
+default, \fB\-l 5\fR is added to the command lines.
 
 .SS [ptp4l.conf]
 Settings specified in this section are copied directly to the configuration
@@ -288,8 +288,8 @@ iburst 1
 [ptp_domain 0]
 interfaces eth0 eth1
 ntp_poll 0
-phc2sys_poll -2
-delay 10e-6
+phc2sys_poll \-2
+delay 10e\-6
 ptp4l_option clock_servo linreg
 ptp4l_option delay_mechanism P2P
 
@@ -309,7 +309,7 @@ driftfile /var/lib/chrony/drift
 
 [ntpd]
 path /usr/sbin/ntpd
-options -u ntp:ntp
+options \-u ntp:ntp
 
 [ntp.conf]
 restrict default nomodify notrap nopeer noquery
@@ -319,7 +319,7 @@ driftfile /var/lib/ntp/drift
 
 [phc2sys]
 path /usr/sbin/phc2sys
-options -l 5
+options \-l 5
 
 [ptp4l]
 path /usr/sbin/ptp4l