Custom field import form help lists numeric content type IDs rather than strings

[jeremystretch]

NetBox version

v3.0.9

Python version

3.8

Steps to Reproduce

1. Navigate to the custom field import form
2. Click on the blue question mark icon next to the content_types field listing.

Expected Behavior

The pop-up modal should list all valid content types by their dotted names (e.g. dcim.site).

Observed Behavior

The list shows the numeric ID of each content type, which does not work for bulk import. They're also not in any particular order.