comment out markdown code example

Example 1: markdown comment

<!-- YOUR_COMMENT_HERE -->

OR:

AT_LEAST_ONE_EMPTY_LINE_HERE

[//]: # (YOUR_COMMENT_HERE)

Example 2: markdown comment

<!-- *comment* --/>

Example 3: comment in markdown

[//]: # (This may be the most platform independent comment, but i depends)
[//]: # (it does not work in google colab)