remove duplicate html-escaping in block comment
remove duplicate html-escaping in block comment

takahashim/review,suzuki/review,kuad9/review_study,krororo/review,krororo/review,kmuto/review,orangain/review,suzuki/review,orangain/review,kmuto/review,murashitas/review,masawada/review,kuad9/review_study,takahashim/review,murashitas/review,kmuto/review,krororo/review,masawada/review