improve comments for prime example
improve comments for prime example

zaafar/bcc,brendangregg/bcc,romain-intel/bcc,zaafar/bcc,romain-intel/bcc,zaafar/bcc,mcaleavya/bcc,shodoco/bcc,mbudiu-bfn/bcc,iovisor/bcc,mkacik/bcc,tuxology/bcc,tuxology/bcc,shodoco/bcc,mbudiu-bfn/bcc,zaafar/bcc,mbudiu-bfn/bcc,mcaleavya/bcc,mkacik/bcc,romain-intel/bcc,romain-intel/bcc,iovisor/bcc,brendangregg/bcc,tuxology/bcc,romain-intel/bcc,shodoco/bcc,iovisor/bcc,mkacik/bcc,mcaleavya/bcc,mbudiu-bfn/bcc,brendangregg/bcc,brendangregg/bcc,tuxology/bcc,mkacik/bcc,shodoco/bcc,tuxology/bcc,mbudiu-bfn/bcc,iovisor/bcc,mcaleavya/bcc,mkacik/bcc,zaafar/bcc,shodoco/bcc,mcaleavya/bcc,iovisor/bcc,brendangregg/bcc