fix typos in the migration

app/models/mute.rb

@@ -8,7 +8,7 @@
 #  target_account_id  :integer          not null
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
-#  hide_notifications :boolean          default(FALSE), not null
+#  hide_notifications :boolean          default(TRUE), not null
 #
 
 class Mute < ApplicationRecord