To edit the title or description of a list:
Go to Settings -> More -> Lists:

Your lists page will open:

Click on the 3 dots next to the list you'd like to modify and choose Edit:

Make the changes then hit Save:

The changes will be saved:

Go to Settings -> More -> Lists:

Your lists page will open:

Click on the 3 dots next to the list you'd like to modify and choose Edit:

Make the changes then hit Save:

The changes will be saved:

Published on: 25 / 11 / 2020