fix invalid attribute type

src/client/js/components/PageAttachment.jsx

@@ -109,7 +109,7 @@ class PageAttachment extends React.Component {
       deleteAttachmentModal = (
         <DeleteAttachmentModal
           isOpen={showModal}
-          animation={false}
+          animation="false"
           toggle={deleteModalClose}
 
           attachmentToDelete={attachmentToDelete}