Hi @JAWL,
The Create HTML table will output characters like < as <.

In the video Reza uses a compose action with an expression to clean up the HTML of that Create HTML table action. He uses the expression below:
replace(replace(replace(replace(replace(body('Create_HTML_Table'), '<', '<'), '>', '>'), '&', '&'), ''', '"'), '"', '"')
Are you using that as well in your flow?
Have a look at this part where he explains why to use this Clean HTML compose action.
https://youtu.be/VnWg-Eox37Q?t=843