Categorization question

Once you edit the documentation page, you need to edit and save the template without making any changes (a "null edit"). When you save a page, any pages that "use" it aren't immediately updated, it can take a while. Doing a null edit forces an immediate update.

In that case, since that template is locked, should I have just waited for the category to update or asked someone who's able to edit the template?

Waiting would probably be best. The categorisation of templates isn't crucial anyway, there's no hurry.