doc: Fix syntax errors in man page.

dvblast.1

@@ -50,7 +50,7 @@ Maximum retention allowed between input and output (default: 40 ms)
 \fB\-f\fR, \fB\-\-frequency\fR <frequency>
 Frontend frequency
 .TP
-\fB\-F\fr, \fB\-\-fec\-inner\fR <FEC>
+\fB\-F\fR, \fB\-\-fec\-inner\fR <FEC>
 Forward Error Correction used by satellite (FEC Inner)
 .br
 DVB-S2 0|12|23|34|35|56|78|89|910|999 (default auto: 999)
@@ -134,7 +134,7 @@ Rolloff value to use
 .br
 DVB-S2 35=0.35|25=0.25|20=0.20|0=AUTO (default: 35)
 .TP
-\fB\-s\fR, \fB\-\-symbole\-rate\fR <symbol rate>
+\fB\-s\fR, \fB\-\-symbol\-rate\fR <symbol rate>
 Symbole rate
 .TP
 \fB\-S\fR, \fB\-\-diseqc\fR <diseqc>