Add info on custom field usage to Custom Links

[mmahacek]

Change Type

Addition

Area

[ ] Installation instructions
[ ] Configuration parameters
[ ] Functionality/features
[ ] REST API
[ ] Administration/development
[X] Other

Proposed Changes

Include an additional note in the Custom Links section to indicate the notation for using custom fields.
{{ obj.cf.FieldName }}

[jeremystretch]

This is already documented under the custom fields documentation. It works the same everywhere; there's nothing special about referencing it from within a custom link. Let's avoid introducing redundant documentation, as it presents an additional maintenance burden.

[mmahacek]

While I do agree that the Custom Fields documentation is a better place for this, I don't see anything on that documentation page in regards to using custom fields in jinja templates. After a bit of digging, the only place I could find a reference to this was hidden on the Export Templates page.

[jeremystretch]

My mistake; I could have sworn we added that a while ago. Still, it needs to be documented on the custom fields page, not under custom links.