Fix hypen/minus usage in man page.

redshift.1

@@ -3,7 +3,7 @@
 redshift \- Set color temperature of display according to time of day.
 .SH SYNOPSIS
 .B redshift
-\fI[-l LAT:LON | -l PROVIDER:OPTIONS] [-t DAY:NIGHT] \fR[\fIOPTIONS\fR...]
+\fI[\-l LAT:LON | \-l PROVIDER:OPTIONS] [\-t DAY:NIGHT] \fR[\fIOPTIONS\fR...]
 .SH DESCRIPTION
 .B redshift
 adjusts the color temperature of your screen according to your
@@ -85,29 +85,29 @@ program options are placed under the `redshift' header, while options
 for location providers and adjustment methods are placed under a
 header with the name of that provider or method. General options are:
 .TP
-\fBtemp-day\fR = integer
+\fBtemp\-day\fR = integer
 Daytime temperature
 .TP
-\fBtemp-night\fR = integer
+\fBtemp\-night\fR = integer
 Night temperature
 .TP
 \fBtransition\fR = 0 or 1
 Disable or enable transitions
 .TP
-\fBbrightness-day\fR = 0.1\-1.0
+\fBbrightness\-day\fR = 0.1\-1.0
 Screen brightness at daytime
 .TP
-\fBbrightness-night\fR = 0.1\-1.0
+\fBbrightness\-night\fR = 0.1\-1.0
 Screen brightness at night
 .TP
 \fBgamma\fR = R:G:B
 Gamma adjustment to apply
 .TP
-\fBadjustment-method\fR = name
+\fBadjustment\-method\fR = name
 Select adjustment method. Options for the adjustment method can be
 given under the configuration file heading of the same name.
 .TP
-\fBlocation-provider\fR = name
+\fBlocation\-provider\fR = name
 Select location provider. Options for the location provider can be
 given under the configuration file heading of the same name.
 .PP
@@ -116,18 +116,18 @@ the help output of the providers and methods.
 .SH EXAMPLE
 Example for Copenhagen, Denmark:
 .IP
-\fB$\fR redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m vidmode -v
+\fB$\fR redshift \-l 55.7:12.6 \-t 5700:3600 \-g 0.8 \-m vidmode \-v
 .PP
 An example configuration file with the same effect as the above
 command line:
 .IP
 .nf
 [\fBredshift\fR]
-temp-day=5700
-temp-night=3600
+temp\-day=5700
+temp\-night=3600
 gamma=0.8
-adjustment-method=vidmode
-location-provider=manual
+adjustment\-method=vidmode
+location\-provider=manual
 
 [\fBmanual\fR]
 lat=55.7