Linked many-to-many relations are exported with HTML in CSV output

[jeremystretch]

NetBox version

v3.2.2

Python version

3.8

Steps to Reproduce

1. Create a site and some contacts
2. Assign multiple contacts to a site
3. View the sites list and add the "Contacts" column
4. Go to export > current view and inspect the CSV output

Expected Behavior

The value of the contacts columns for each object should be a plain comma-delimited string, e.g. "Contact 1,Contact 2".

Observed Behavior

The output for this column includes the HTML hyperlink code, e.g. "<a href=""/tenancy/contacts/1/"">Contact 1</a>, <a href=""/tenancy/contacts/2/"">Contact 2</a>".