spec/features/help_pages_spec.rb is failing on master

  1) Help Pages Get the main help page without a trailing slash behaves like help page prefixes links correctly
     Failure/Error: expect(page).to have_selector(%(div.documentation-index > ul a[href="#{prefix}/help/api/README.md"]))
       expected to find visible css "div.documentation-index > ul a[href=\"/help/api/README.md\"]" but there were no matches
     Shared Example Group: "help page" called from ./spec/features/help_pages_spec.rb:16
     # ./spec/features/help_pages_spec.rb:7:in `block (4 levels) in <top (required)>'

  2) Help Pages Get the main help page with a trailing slash behaves like help page prefixes links correctly
     Failure/Error: expect(page).to have_selector(%(div.documentation-index > ul a[href="#{prefix}/help/api/README.md"]))
       expected to find visible css "div.documentation-index > ul a[href=\"/help/api/README.md\"]" but there were no matches
     Shared Example Group: "help page" called from ./spec/features/help_pages_spec.rb:24
     # ./spec/features/help_pages_spec.rb:7:in `block (4 levels) in <top (required)>'

  3) Help Pages Get the main help page with a relative installation behaves like help page prefixes links correctly
     Failure/Error: expect(page).to have_selector(%(div.documentation-index > ul a[href="#{prefix}/help/api/README.md"]))
       expected to find visible css "div.documentation-index > ul a[href=\"/gitlab/help/api/README.md\"]" but there were no matches
     Shared Example Group: "help page" called from ./spec/features/help_pages_spec.rb:33
     # ./spec/features/help_pages_spec.rb:7:in `block (4 levels) in <top (required)>'

(https://gitlab.com/gitlab-org/gitlab-ce/-/jobs/122186278)

Edited by Achilleas Pipinellis