Fixed golint error

go/vt/vtctld/tablet_stats_cache.go

@@ -36,9 +36,9 @@ type heatmap struct {
 
 type byTabletUID []*discovery.TabletStats
 
-func (a byTabletUid) Len() int           { return len(a) }
-func (a byTabletUid) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
-func (a byTabletUid) Less(i, j int) bool { return a[i].Tablet.Alias.Uid < a[j].Tablet.Alias.Uid }
+func (a byTabletUID) Len() int           { return len(a) }
+func (a byTabletUID) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byTabletUID) Less(i, j int) bool { return a[i].Tablet.Alias.Uid < a[j].Tablet.Alias.Uid }
 
 const tabletMissing = -1
 
@@ -123,7 +123,7 @@ func (c *tabletStatsCache) StatsUpdate(stats *discovery.TabletStats) {
 		}
 
 		c.statuses[keyspace][shard][cell][tabletType] = append(c.statuses[keyspace][shard][cell][tabletType], stats)
-		sort.Sort(byTabletUid(c.statuses[keyspace][shard][cell][tabletType]))
+		sort.Sort(byTabletUID(c.statuses[keyspace][shard][cell][tabletType]))
 		c.statusesByAlias[aliasKey] = stats
 		c.tabletCountsByCell[cell]++
 		return