Follow-up from "Copy and merge the existing DAST docs to a new location"

The following discussions from !10712 (merged) should be addressed:

@eread started a discussion:

Use cases section duplicates the first part of the Overview section.

that you can later download and analyze. Due to implementation limitations, we

@eread started a discussion:

This content is a duplicate of the content at line 93.
@eread started a discussion:

variables is used above before being introduced. Ideally, we'd introduce something before using it.

In the above, the `website` variable holds the URL to run the tests against.