What was the name of the document that president Lincoln draft to put end to slavery?

The Emancipation Proclamation - issued Septrmber 1862, to take effect January 1863.

It did not strictly end slavery, because it was only telling the troops to rob the Southern farmers of their slaves (and other chattels), while leaving the Northern slave-owning states alone.

But it was an unusual case of a wartime measure that could not be rescinded afterwards, and so it did eventually have the 'knock on' effect of ending slavery.