Merge pull request #10019 from opf/fix/base-url-relative-root

Use the root_url which includes relative URL root for the setting macro

lib/open_project/text_formatting/filters/setting_macros_filter.rb

@@ -64,7 +64,11 @@ module OpenProject::TextFormatting
       end
 
       def base_url
-        OpenProject::Application.root_url
+        url_helpers.root_url.chomp('/')
+      end
+
+      def url_helpers
+        @url_helpers ||= OpenProject::StaticRouting::StaticRouter.new.url_helpers
       end
 
       ##