DOC Add note about updated text and localisation key

Author: GuySartorelli

en/08_Changelogs/6.2.0.md

@@ -52,6 +52,7 @@ If your own code uses a `font-icon-*` CSS class, we recommend adding `aria-hidde
 
 - [`Hierarchy::duplicateWithChildren()`](api:SilverStripe\ORM\Hierarchy\Hierarchy::duplicateWithChildren()) used to set new sort values for duplicated children - it now uses the sort values from the original records.
 - Fields returned from [`QueuedJobDescriptor::getCMSFields()`](api:Symbiote\QueuedJobs\DataObjects\QueuedJobDescriptor::getCMSFields()) have changed to improve the UX. If you were changing those fields (e.g. with a subclass or an extension implementing `updateCMSFields()`) you may need to adjust your code to account for these changes.
+- The text for [`GridFieldAddNewButton`](api:SilverStripe\Forms\GridField\GridFieldAddNewButton) has changed from "Add {record}" to "Add new {record}". It also uses a new localisation key: `SilverStripe\Forms\GridField\GridField.AddNew`.
 
 ## API changes