project link in the projects collection resource uses wrong template variable name

[odrotbohm]

The projects collection resource exposes a link under the relation of project that contains an {id} template variable. However, there's no id field in the embedded preview documents. If they're supposed to be expanded with a related value from the surrounding document, it's common practice to name the template variables like the fields they're supposed to be expanded with. In this case, I assume that's {slug}?