Update docs/backend/upgrading/version-specific-migration/upgrade-to-60.md

Co-authored-by: Steve Piercy <[email protected]>

Author: gforcada

docs/backend/upgrading/version-specific-migration/upgrade-to-60.md

@@ -655,4 +655,4 @@ It renders the portlets from the `plone.footerportlets` portlet manager.
 
 Since `zope.schema==6.1.0`, all `zope.schema.Bool` fields must have a `required=False` attribute.
 This allows you to either tick or not tick the checkbox, submit the form, and process the field with either its value when ticked or `None` when unticked.
-otherwise, you will not be able to save the form without marking the checkbox, which effectively turns that field to be always `True`.
+Otherwise, you can't save the form without ticking the checkbox, which effectively makes the field value always `True`.