use url if available as document link

src/lib/components/chat/Messages/CitationsModal.svelte

@@ -90,8 +90,8 @@
 										class="hover:text-gray-500 hover:dark:text-gray-100 underline flex-grow"
 										href={document?.metadata?.file_id
 											? `/api/v1/files/${document?.metadata?.file_id}/content${document?.metadata?.page !== undefined ? `#page=${document.metadata.page + 1}` : ''}`
-											: document.source.name.includes('http')
-												? document.source.name
+											: document.source?.url?.includes('http')
+												? document.source.url
 												: `#`}
 										target="_blank"
 									>