Fix typo.
Fix typo.

Signed-off-by: Benoit Sigoure <d0ba46810740e35622837d76cd77ceb8c4bf46f5@gmail.com>

geoffreyanderson/opentsdb.net,geoffreyanderson/opentsdb.net,manolama/opentsdb.net,OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net,manolama/opentsdb.net,OpenTSDB/opentsdb.net,OpenTSDB/opentsdb.net,manolama/opentsdb.net