Fix number of results returned from TrendingTags.get

app/models/trending_tags.rb

@@ -17,7 +17,7 @@ class TrendingTags
 
     def get(limit)
       key     = "#{KEY}:#{Time.now.utc.beginning_of_day.to_i}"
-      tag_ids = redis.zrevrange(key, 0, limit).map(&:to_i)
+      tag_ids = redis.zrevrange(key, 0, limit - 1).map(&:to_i)
       tags    = Tag.where(id: tag_ids).to_a.map { |tag| [tag.id, tag] }.to_h
       tag_ids.map { |tag_id| tags[tag_id] }.compact
     end