fixed formatting error in manpage
@@ -112,11 +112,10 @@ once hcxdumptool terminated, power off system
.I --ignore_warning
hcxdumptool will not terminate if other services take access on the device
.TP
--I
+.I -I
show wlan interfaces
.TP
-.I
--C
+.I -C
show available channels and quit
.TP
.I -h or --help
