How to modify or hide the default Suggestion feedback dialog that displays after dismissing a Suggestion in CRM?
To modify the questions that display in the default Suggestion feedback dialog, update the following field labels on the Suggestion_Feedback_vod__c object to contain the desired question text:
A total of four questions are available. The questions are limited to 40 characters and have Yes/No answer types. If all four questions are not needed, remove FLS access to any of the above fields that are not being utilized.
To prevent the Suggestion feedback dialog from displaying at all, remove FLS access to all of the above fields.
CRM Help Documentation: Displaying the Feedback Dialog