Markdown formatting in modular page for

I have a modular page, with an associated backed form. This form has a field type editor. The data gets saved well. When I want to display it on frontend using twig tags, it does not get formatted.

E.g.
The editor content
# header
## header again

In twig template
{{page.header.description}}

Output on HTML page
# header ## header again.

How can I handle this?
Please help.