backend/app/models/tag.rb

@@ -165,7 +165,7 @@ class Tag < ApplicationRecord
         tag_name.update!(canonical: target_tag.tag_name)
       end
 
-      # 再集計
+      # 投稿件数を再集計
       target_tag.update_columns(post_count: PostTag.kept.where(tag: target_tag).count)
     end