verb
emend
ee-MEND/iˈmend/
To correct or improve a text by editing.
The editor emends the misspelled word with a red pencil.

Etymology
The Latin pieces express taking faults out, hence correcting or improving something. Applied to writing, emending removes errors or revises faulty wording to make the text better.
More examples
- She emended the quotation after checking the original letter.
- We need to emend the report's misleading final sentence.
- Scholars are emending the damaged text using another surviving copy.
Forms
emend · emends · emended · emending
emendation noun — A correction made to a text.