Update faq.content
Update faq.content

Fix typo : unabel -> unable
OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net,geoffreyanderson/opentsdb.net,OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net,manolama/opentsdb.net,manolama/opentsdb.net,manolama/opentsdb.net,OpenTSDB/opentsdb.net