fix reference_guide.md bpf_get_current_comm search
fix reference_guide.md bpf_get_current_comm search

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