light cleaning of custom library docs

docs/tutorials/working-with-custom-libraries/index.ipynb

@@ -16,7 +16,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "ff64bdc4-2dd5-4738-affc-36dab7c82584",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "import base64, json, urllib.parse, zlib\n",
@@ -36,7 +38,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "8c582ec1-23ca-4e76-8733-cf8d8d7d8b46",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "library = [\n",
@@ -91,7 +95,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "3e9a519c-a868-4d71-885e-fcafe41915fa",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "zlib_opts = dict(wbits=-15)\n",
@@ -117,7 +123,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "63445943-ecea-441e-87f5-7d2f361b7c4d",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "library_json = json.dumps(\n",
@@ -141,7 +149,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "82d193a9-2366-4df4-9263-84b65fa96c68",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "library_xml = f\"\"\"<mxlibrary>{library_json}</mxlibrary><!-- /my library -->\"\"\"\n",
@@ -170,18 +180,14 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "3f062362-8691-42d9-b9d7-f4a29cf6c405",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "library_data_uri = f\"data:application/xml,{library_xml}\""
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "c59eeed7-8599-429e-a869-3964b4709964",
-   "metadata": {},
-   "source": []
-  },
   {
    "cell_type": "markdown",
    "id": "ca0d0acc-7186-4f81-83cf-fd93da83f59c",
@@ -203,7 +209,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "5a89ad37-caf4-4174-90f0-ba51f7c98c3b",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "url_params = dict(ipydrawio.Diagram._default_url_params(None))\n",
@@ -225,7 +233,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "938af1fe-a2b5-42a0-beee-c93d910b7dfd",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "url_params.update(ui=\"min\", libs=\"0\", p=\"\")"
@@ -243,7 +253,9 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "91835331-2f68-48af-9ca1-c2512f25ded3",
-   "metadata": {},
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "d = ipydrawio.Diagram(url_params=url_params, layout=dict(height=\"800px\"))\n",