cmd/scollector: update SNMP docs; doc cleanup
cmd/scollector: update SNMP docs; doc cleanup

fixes #900

mnikhil-git/bosun,SlashmanX/bosun,dieface/bosun,augporto/bosun,csmith-palantir/bosun,azhurbilo/bosun,trigrass2/bosun,gregdel/bosun,yyljlyy/bosun,leapar/bosun,fisdap/bosun,madhukarreddy/bosun,mathpl/bosun,snowsnail/bosun,eMerzh/bosun,simnv/bosun,couchand/bosun,treejames/bosun,TrentScholl/bosun,leapar/bosun,madhukarreddy/bosun,leapar/bosun,augporto/bosun,influxdata/bosun,seekingalpha/bosun,bookingcom/bosun,seekingalpha/bosun,shanemadden/bosun,mhenderson-so/bosun,influxdb/bosun,influxdata/bosun,gregdel/bosun,dieface/bosun,dbirchak/bosun,TrentScholl/bosun,mxk1235/bosun,eMerzh/bosun,evgeny-potapov/bosun,azhurbilo/bosun,youngl98/bosun,briantist/bosun,augporto/bosun,Skyscanner/bosun,youngl98/bosun,objStorage/bosun,mehulkar/bosun,leapar/bosun,cazacugmihai/bosun,mehulkar/bosun,inkel/bosun,SlashmanX/bosun,mxk1235/bosun,mhenderson-so/bosun,briantist/bosun,bridgewell/bosun,mathpl/bosun,trigrass2/bosun,seekingalpha/bosun,noblehng/bosun,melifaro/bosun,youngl98/bosun,Skyscanner/bosun,fisdap/bosun,cazacugmihai/bosun,gregdel/bosun,mathpl/bosun,treejames/bosun,seekingalpha/bosun,trigrass2/bosun,inkel/bosun,yyljlyy/bosun,eMerzh/bosun,bridgewell/bosun,noblehng/bosun,bosun-sharklasers/bosun,dieface/bosun,influxdata/bosun,briantist/bosun,influxdb/bosun,shanemadden/bosun,leapar/bosun,shanemadden/bosun,bosun-sharklasers/bosun,Skyscanner/bosun,simnv/bosun,GROpenSourceDev/bosun,dimamedvedev/bosun,bosun-monitor/bosun,couchand/bosun,shanemadden/bosun,GROpenSourceDev/bosun,azhurbilo/bosun,TrentScholl/bosun,augporto/bosun,influxdata/bosun,dimamedvedev/bosun,objStorage/bosun,snowsnail/bosun,briantist/bosun,yyljlyy/bosun,evgeny-potapov/bosun,dieface/bosun,mhenderson-so/bosun,inkel/bosun,seekingalpha/bosun,melifaro/bosun,influxdb/bosun,cazacugmihai/bosun,snowsnail/bosun,youngl98/bosun,alienth/bosun,azhurbilo/bosun,dbirchak/bosun,influxdb/bosun,mhenderson-so/bosun,noblehng/bosun,jareksm/bosun,csmith-palantir/bosun,evgeny-potapov/bosun,eMerzh/bosun,mnikhil-git/bosun,alienth/bosun,cyngn/bosun,couchand/bosun,jareksm/bosun,mehulkar/bosun,objStorage/bosun,madhukarreddy/bosun,couchand/bosun,dbirchak/bosun,cyngn/bosun,bosun-monitor/bosun,melifaro/bosun,mnikhil-git/bosun,madhukarreddy/bosun,snowsnail/bosun,mnikhil-git/bosun,bookingcom/bosun,mxk1235/bosun,azhurbilo/bosun,GROpenSourceDev/bosun,Skyscanner/bosun,evgeny-potapov/bosun,bookingcom/bosun,dimamedvedev/bosun,dimamedvedev/bosun,bridgewell/bosun,inkel/bosun,csmith-palantir/bosun,treejames/bosun,youngl98/bosun,CheRuisiBesares/bosun,noblehng/bosun,CheRuisiBesares/bosun,couchand/bosun,yyljlyy/bosun,couchand/bosun,jareksm/bosun,leapar/bosun,simnv/bosun,azhurbilo/bosun,Skyscanner/bosun,noblehng/bosun,mathpl/bosun,objStorage/bosun,evgeny-potapov/bosun,dbirchak/bosun,GROpenSourceDev/bosun,cazacugmihai/bosun,cyngn/bosun,csmith-palantir/bosun,mhenderson-so/bosun,jareksm/bosun,CheRuisiBesares/bosun,trigrass2/bosun,objStorage/bosun,fisdap/bosun,dieface/bosun,mehulkar/bosun,youngl98/bosun,dbirchak/bosun,mnikhil-git/bosun,eMerzh/bosun,cazacugmihai/bosun,augporto/bosun,GROpenSourceDev/bosun,bosun-sharklasers/bosun,CheRuisiBesares/bosun,SlashmanX/bosun,gregdel/bosun,melifaro/bosun,influxdb/bosun,yyljlyy/bosun,influxdb/bosun,dieface/bosun,dimamedvedev/bosun,mehulkar/bosun,fisdap/bosun,treejames/bosun,augporto/bosun,dimamedvedev/bosun,SlashmanX/bosun,cyngn/bosun,gregdel/bosun,madhukarreddy/bosun,mathpl/bosun,fisdap/bosun,bosun-sharklasers/bosun,snowsnail/bosun,alienth/bosun,melifaro/bosun,snowsnail/bosun,bosun-monitor/bosun,bookingcom/bosun,simnv/bosun,CheRuisiBesares/bosun,cyngn/bosun,bookingcom/bosun,mxk1235/bosun,noblehng/bosun,inkel/bosun,jareksm/bosun,bridgewell/bosun,csmith-palantir/bosun,dbirchak/bosun,cazacugmihai/bosun,shanemadden/bosun,TrentScholl/bosun,briantist/bosun,mnikhil-git/bosun,eMerzh/bosun,madhukarreddy/bosun,TrentScholl/bosun,alienth/bosun,bridgewell/bosun,simnv/bosun,alienth/bosun,csmith-palantir/bosun,influxdata/bosun,CheRuisiBesares/bosun,simnv/bosun,bosun-sharklasers/bosun,briantist/bosun,melifaro/bosun,trigrass2/bosun,SlashmanX/bosun,Skyscanner/bosun,inkel/bosun,mxk1235/bosun,GROpenSourceDev/bosun,bosun-monitor/bosun,evgeny-potapov/bosun,SlashmanX/bosun,yyljlyy/bosun,seekingalpha/bosun,gregdel/bosun,mathpl/bosun,alienth/bosun,TrentScholl/bosun,bridgewell/bosun,treejames/bosun,jareksm/bosun,bosun-monitor/bosun,bookingcom/bosun,bosun-monitor/bosun,influxdata/bosun,cyngn/bosun,trigrass2/bosun,mxk1235/bosun,treejames/bosun,shanemadden/bosun,fisdap/bosun,mhenderson-so/bosun,mehulkar/bosun,bosun-sharklasers/bosun,objStorage/bosun