fixed labelling for total latency distinction
fixed labelling for total latency distinction

Change-Id: I138e8eb4e24de954a8a305630f21041caaecf269
Reviewed-on: http://review.couchbase.org/c/cbmonitor/+/163576
Reviewed-by: Korrigan Clark <11cf3ebdc6cba78053c91b2fd94cb21b47d0d02e@couchbase.com>
Tested-by: <26533c90fa6d54fe425b5642af9dcc2fee9ef620@gmail.com>

couchbase/cbmonitor,couchbase/cbmonitor