If, after any public hearing held upon an amendment, the proposed amendment changed substantially or is revised to include land previously not affected by it, the Borough Council shall hold another public hearing pursuant to public notice before proceeding to vote on the amendment. In the event substantial amendments are made in the proposed ordinance or amendment, before voting upon enactment, the Borough Council shall, at least 10 days prior to enactment, readvertise, in one newspaper of general circulation in the Borough, a brief summary setting forth all the provisions in reasonable detail together with a summary of the amendments.