Transform markdown formatting into HTML formatting

[SheaBelsky]

Is your feature request related to a problem? Please describe.
On our site, we write text in plain text, and we occasionally want to add formatting to some text to make it stand out. We've historically written this format using markdown, but it isn't getting meaningfully transformed into actual text formatting.

Describe the solution you'd like
Text formatting written in markdown should actually be formatted properly.

_this_ should become this

`this`

should become this

*this* should become this

Additional context
See below for how our formatting currently looks (on the courses page)

[devevignesh]

I would like to claim this

[SheaBelsky]

@devevignesh It's yours! Thank you for picking this up!

[SheaBelsky]

@devevignesh Are you still working on this issue? If not, please let me know, so that I can unassign you from this issue.

[c-tanner]

Submitted a PR that should address this issue :)