Update documentation archived projects toggle

Problem to solve

We need to update search documentation. Section "include archived projects" needs to be extended to include all scopes that are currently supported (exclude wiki_blobs and zoekt code search).

https://docs.gitlab.com/ee/user/search/#include-archived-projects-in-search-results

Further details

We need to update a structure of the documentation in this section as current form is poised to repete the same information for each scope which is contra-productive.

Proposal

current section already contains all nescessary information on how to use the front-end filter. We just need to extend the information saying that all scopes but two are using this filter.