[Markdown Supports] Maths, Python code etc..

Hi,

Description

Thank you for providing us this great visualisation tool!!
If possible, I'd like to make a Feature requrest regarding Markdown support on Tensorboard.

Currently, if you run the code below, you would get a super simple plot with a description next to the plot. But, unfortunatelly, Tensorboard doesn't render the text(in the code, description) as I use other Markdown editors, e.g., Typora. So, I'd like to know your thoughts on this feature request.

Sample Code

import tensorflow as tf

tf.compat.v1.enable_eager_execution()
writer = tf.compat.v2.summary.create_file_writer("./tmp/")

description = """

```python
print("hello world")
```

## Table

---

| Tables   |      Are      |  Cool |
|----------|:-------------:|------:|
| col 1 is |  left-aligned | $1600 |
| col 2 is |    centered   |   $12 |
| col 3 is | right-aligned |    $1 |

`sh push.sh`

- asdf
- asd

1. asdf
2. asdf

This is an example of an inline MathJax expression: \\( 2 \times 2 = 4 \\)

$\theta$,

$$
\theta
$$

"""

with writer.as_default():
    with tf.contrib.summary.always_record_summaries():
        tf.compat.v2.summary.scalar(name="sample",
                                    data=tf.constant(1),
                                    step=0,
                                    description=description)

Env

• OS: Ubuntu 18.04
• Python: 3.7.4
• TensorFlow: 1.14.0
• TensorBoard: 1.14.0

Sorry, since Github tries to render even the text in the python code, it doesn't look organised but I hope you'll get my point...

Reproduce the supplied Python example with TensorFlow 1.14.0 and TensorBoard 1.14.0 to inspect how the description is currently displayed. Define the rendering scope for fenced Python code, tables, lists, inline math, and display math, then verify that each example renders as intended in TensorBoard.