profile-manpage: Add missing flag -C in the SYNOPSIS section of the man page
profile \- Profile CPU usage by sampling stack traces. Uses Linux eBPF/bcc.
.SH SYNOPSIS
.B profile [\-adfh] [\-p PID | \-L TID] [\-U | \-K] [\-F FREQUENCY | \-c COUNT]
-.B [\-\-stack\-storage\-size COUNT] [\-\-cgroupmap CGROUPMAP] [\-\-mntnsmap MAPPATH] [duration]
+.B [\-\-stack\-storage\-size COUNT] [\-C CPU] [\-\-cgroupmap CGROUPMAP] [\-\-mntnsmap MAPPATH] [duration]
.SH DESCRIPTION
This is a CPU profiler. It works by taking samples of stack traces at timed
intervals. It will help you understand and quantify CPU usage: which code is
