amend / emend
Changing a text or law versus correcting a text.
To amend is to change by adding, cutting, or revising, especially a law, motion, or document: amend the statute. To emend is to correct a text, usually by removing an error: emend the manuscript. All emending is amending; not all amending is emending. In general use, amend is the word you want.
Examples
UseThe committee amended the bill.
UseThe editor emended a garbled line.
AvoidThe committee emended the bill.