Enchance print message.

data/data.go

diff --git a/data/data.go b/data/data.go
index 3f14fd1..61aabb9 100644
--- a/data/data.go
+++ b/data/data.go
@@ -207,6 +207,6 @@
 func printDBStatsInfo(db *sql.DB, versionedId string) {
 	tick := time.Duration(statCollectionInterval * time.Second)
 	for _ = range time.Tick(tick) {
-		log.Debugf("Current number of open DB for ver {%s} is {%d}", versionedId, db.Stats().OpenConnections)
+		log.Debugf("Current number of open DB connections for ver {%s} is {%d}", versionedId, db.Stats().OpenConnections)
 	}
 }