"Running Task For Collections" page does not mention Cake Frosting

The ["Running Task For Collections"](https://cakebuild.net/docs/writing-builds/tasks/running-task-for-collections) page should in my opinion contain at least some statement that there is no directly corresponding feature in Frosting.

Read the “Running Task For Collections” page linked in the issue and compare its explanation with the requested Frosting context. Done means the page explicitly states that Frosting has no directly corresponding feature, with the wording reviewed against the existing documentation.

Written by the indexing model from the issue text.