amend verb [T] to change the words of (esp. a law or a legal document) 
In line 20, 'men' should be amended (=changed) to 'people'.
Until the constitution is amended, the power to appoint ministers will remain with the president.

amendment noun 
He insisted that the book did not need amendment. [U]
I've made a few last-minute amendments to the article. [C]

An amendment is sometimes a change to a law that is not yet in operation and
 is still being discussed by a parliament. 
An amendment to the bill was agreed without a vote.

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http://dictionary.cambridge.org/define.asp?key=amend*1+0