FTS/ES: few messages typos fixes
FTS/ES: few messages typos fixes

Change-Id: I0f51abbba79828b88caff4fc39a04ecb73b20d93
Reviewed-on: http://review.couchbase.org/70059
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Alex Gyryk <0e5cab161284683621f17481c0995df0d35b63eb@couchbase.com>

pavel-paulau/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner