fix MR comments

db/migrate/20200824171649_add_star_to_broadcast_recordings.rb

@@ -1,5 +1,5 @@
 class AddStarToBroadcastRecordings < ActiveRecord::Migration[6.0]
   def change
-    add_column :broadcast_recordings, :star, :boolean
+    add_column :broadcast_recordings, :starred, :boolean, default: false
   end
 end

db/structure.sql

@@ -542,7 +542,7 @@ CREATE TABLE public.broadcast_recordings (
     updated_at timestamp(6) without time zone NOT NULL,
     duration double precision,
     hidden boolean DEFAULT false,
-    star boolean
+    starred boolean DEFAULT false
 );