docs: replace dead link (#8494)

* docs update dead link on main-menu page

* doc: fix dead link

dev-docs/docs/@excalidraw/excalidraw/api/utils/export.mdx

@@ -20,7 +20,7 @@ exportToCanvas(&#123;<br/>&nbsp;
   getDimensions,<br/>&nbsp;
   files,<br/>&nbsp;
   exportPadding?: number;<br/>
-&#125;: <a href="https://github.com/excalidraw/excalidraw/blob/master/packages/excalidraw/packages/utils.ts#L21">ExportOpts</a>
+&#125;: <a href="https://github.com/excalidraw/excalidraw/blob/master/packages/utils/export.ts#L24">ExportOpts</a>
 </pre>
 
 | Name | Type | Default | Description |