Fix unknown type in sharding up log

Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>

storage/remote/queue_manager.go

@@ -500,7 +500,7 @@ func (t *QueueManager) updateShardsLoop() {
 			// to stay close to shardUpdateDuration.
 			select {
 			case t.reshardChan <- desiredShards:
-				level.Info(t.logger).Log("msg", "Remote storage resharding", "from", t.numShards, "to", numShards)
+				level.Info(t.logger).Log("msg", "Remote storage resharding", "from", t.numShards, "to", desiredShards)
 				t.numShards = desiredShards
 			default:
 				level.Info(t.logger).Log("msg", "Currently resharding, skipping.")