Formatting and spelling fixes for CONTRIBUTING.md
Formatting and spelling fixes for CONTRIBUTING.md

Fixing a typo: Trouleshotting -> Troubleshooting.

Removing a trailing space in the file and a misplaced space at the
beginning of a section that causes the markdown to be formatted
incorrectly.

jipperinbham/influxdb,pkittenis/influxdb,Mindera/influxdb,nooproblem/influxdb,chenziliang/influxdb,arussellsaw/influxdb,jonseymour/influxdb,influxdb/influxdb,apigee/influxdb,daachi/influxdb,pkittenis/influxdb,Mindera/influxdb,joaopedrotaveira/influxdb,vladlopes/influxdb,jipperinbham/influxdb,jipperinbham/influxdb,apigee/influxdb,m4ce/influxdb,influxdata/influxdb,jgeiger/influxdb,chenziliang/influxdb,joaopedrotaveira/influxdb,jonseymour/influxdb,arussellsaw/influxdb,apigee/influxdb,mark-rushakoff/influxdb,influxdata/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,archsaber/influxdb,mvadu/influxdb,runner-mei/influxdb,arussellsaw/influxdb,vladlopes/influxdb,n1tr0g/influxdb,chenziliang/influxdb,mnuessler/influxdb,otoolep/influxdb,pkittenis/influxdb,jgeiger/influxdb,jgeiger/influxdb,linearb/influxdb,li-ang/influxdb,joaopedrotaveira/influxdb,apigee/influxdb,apigee/influxdb,nooproblem/influxdb,n1tr0g/influxdb,mvadu/influxdb,linearb/influxdb,vladlopes/influxdb,daachi/influxdb,m4ce/influxdb,mvadu/influxdb,runner-mei/influxdb,mnuessler/influxdb,m4ce/influxdb,jonseymour/influxdb,arussellsaw/influxdb,n1tr0g/influxdb,otoolep/influxdb,jonseymour/influxdb,otoolep/influxdb,n1tr0g/influxdb,archsaber/influxdb,influxdb/influxdb,li-ang/influxdb,archsaber/influxdb,benbjohnson/influxdb,pkittenis/influxdb,joaopedrotaveira/influxdb,mark-rushakoff/influxdb,jgeiger/influxdb,runner-mei/influxdb,Mindera/influxdb,archsaber/influxdb,benbjohnson/influxdb,vladlopes/influxdb,mark-rushakoff/influxdb,mnuessler/influxdb,m4ce/influxdb,jipperinbham/influxdb,mnuessler/influxdb,jonseymour/influxdb,mark-rushakoff/influxdb,otoolep/influxdb,daachi/influxdb,otoolep/influxdb,jipperinbham/influxdb,daachi/influxdb,mnuessler/influxdb,benbjohnson/influxdb,Mindera/influxdb,nooproblem/influxdb,arussellsaw/influxdb,Mindera/influxdb,jgeiger/influxdb,mvadu/influxdb,influxdb/influxdb,jonseymour/influxdb,pkittenis/influxdb,linearb/influxdb,mnuessler/influxdb,runner-mei/influxdb,linearb/influxdb,benbjohnson/influxdb,otoolep/influxdb,m4ce/influxdb,n1tr0g/influxdb,jgeiger/influxdb,influxdb/influxdb,apigee/influxdb,daachi/influxdb,arussellsaw/influxdb,influxdb/influxdb,m4ce/influxdb,Mindera/influxdb,mvadu/influxdb,mark-rushakoff/influxdb,jipperinbham/influxdb,chenziliang/influxdb,joaopedrotaveira/influxdb,nooproblem/influxdb,pkittenis/influxdb,mvadu/influxdb,n1tr0g/influxdb,daachi/influxdb,nooproblem/influxdb,linearb/influxdb