I'd like to change the translation key to: `forem.admin.categories.new.create_category`

than in `app/views/forem/admin/categories/new.html.erb`:

    <h2><%= t('.create_category') %></h2>
    <!-- translation is: "Creating a new Forum Category" -->

And update all similar cases. (`topics/new`, `admin/topics/edit`, `admin/forums/new`, etc...)