Update FileInput.ipynb to add ref to FileDropper for uploading large …

…files (#7215)

examples/reference/widgets/FileInput.ipynb

@@ -15,7 +15,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The ``FileInput`` widget allows uploading one or more file from the frontend and makes the filename, file data and [MIME type](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types) available in Python. To upload large files, use the ``FileDropper`` widget.\n",
+    "The ``FileInput`` widget allows uploading one or more files from the frontend and makes the filename, file data and [MIME type](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types) available in Python. To upload large files, use the ``FileDropper`` widget.\n",
     "\n",
     "Discover more on using widgets to add interactivity to your applications in the [how-to guides on interactivity](../how_to/interactivity/index.md). Alternatively, learn [how to set up callbacks and (JS-)links between parameters](../../how_to/links/index.md) or [how to use them as part of declarative UIs with Param](../../how_to/param/index.html).\n",
     "\n",