Per this StackOverflow question,
currently the GitHub web app does not render Jupyer's built-in JSON viewer. Instead, it is displayed as the
text <IPython.core.display.JSON object>
example.ipynb
is a notebook which demonstrates the issue. Load it up in the web viewer, and you will see the cell's
output rendered as follows:
When this same file is viewed through a local JupyerLab (or JupyterNotebook) instance, the JSON is correctly loaded, however: