When such petition demands an amendment to a charter, the
chief executive officer shall submit such amendment to the
qualified electors of said municipal corporation at the next
election of any officers of said corporation and if, at said
election, a majority of said electors voting thereon shall vote
for such amendment, the same shall thereupon become an amendment
to and a part of said charter, when approved by the Governor and
filed in the same manner and form as an original charter is
required by the provisions of this article to be approved and
filed.