api/pprof: add comments to describe profile handler
api/pprof: add comments to describe profile handler

guilhermebr/tsuru,ggarnier/tsuru,tsuru/tsuru,ggarnier/tsuru,gwmoura/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,ArxdSilva/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,tsuru/tsuru,ggarnier/tsuru,cezarsa/tsuru,tsuru/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,ggarnier/tsuru,gwmoura/tsuru,gwmoura/tsuru,cezarsa/tsuru,cezarsa/tsuru,tsuru/tsuru