Actually, I thought I knew because I translated something like <a href="/admin/site_settings/category/all_results?filter=top_menu">top menu site setting</a> several times, and it worked 
.
But the tests fail because links without %{base_path} or %{base_url} aren’t allowed.
So I searched for an example and found
I copied that:
<a href="%{base_url}/admin/site_settings/category/all_results?filter=top_menu">top menu site setting</a>
But then the link didn’t work. It became https://example.discourse.group/%%7Bbase_url%7D/admin/site_settings/category/all_results?filter=top_menu
When I installed Homepage Feature, the link there didn’t work either.
So I tried adding a trailing slash and using %{base_url}, but none of them worked.
<a href="/%{base_url}/admin/site_settings/category/all_results?filter=top_menu">top menu site setting</a> links to https://example.discourse.group/admin/customize/themes/%%7Bbase_url%7D/admin/site_settings/category/all_results?filter=top_menu
<a href="%{base_path}/admin/site_settings/category/all_results?filter=top_menu">top menu site setting</a> links to https://example.discourse.group/admin/customize/themes/%%7Bbase_path%7Dadmin/site_settings/category/all_results?filter=top_menu
<a href="/%{base_path}/admin/site_settings/category/all_results?filter=top_menu">top menu site setting</a> links to https://example.discourse.group/%%7Bbase_path%7D/admin/site_settings/category/all_results?filter=top_menu
But I wasn’t able to find a working solution