Fix typo in STIX Visualizer description in notebook

Author: rlmfijan

Scenarios and Workflows/generate_and_visualize_STIX_bundle.ipynb

@@ -61,7 +61,8 @@
    "id": "8486a457",
    "metadata": {},
    "source": [
-    "Jupyter notebook embeds the OASIS CTI STIX Visualizer in an iframe. The JSON bundle is automatically produced with previous script and presented in the separate iFrame.\n",
+    "Jupyter notebook embeds the OASIS CTI STIX Visualizer in an iFrame. The JSON bundle is automatically produced with previous script and presented in the separate iFrame.\n",
+    "\n",
     "Select the JSON content and paste in the cti-stix-visualization dialog box to get an interactive graph, table view and timeline information about the STIX objects."
    ]
   },