Summary

Updates the example template for the "Return to top" component to make it clearer that the anchor link works. Both # and #top work, but #top is a bit more explicit about the intention behind it.

Problem statement

Some individuals implementing USWDS get confused, believing they need to manually add an anchor tag to the top of the page for this feature to work. We can be explicit about this in the documentation, and avoid having this question come up at all. This makes the code easier to understand, and more intention-revealing.

Solution

1. (in this PR) This updates the example templates to suggest using #top -- that's the main way people end up using these templates.
2. (not in this PR) We should probably also link to references about this feature, but I'm not sure where exactly in the documentation to do that. Here are two references that show that # and #top both work, and that both are widely supported by browsers:

• https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/a#attr-href
• https://caniuse.com/mdn-html_elements_a_href_href_top

AI disclosure

What AI tools did you use to create this MR?

• No AI
• Chat
• Completions (e.g. Copilot)
• Coding Agent

Testing and review

Test this feature in a multiple browsers (locally, or in a tool like SauceLabs if you have access to that):

1. Create (or go to) a page that has the "return to top" component, where the DOM has replaced # with #top (is there a way to preview that in this repo? A Storybook or something? I'm not sure)
2. Make sure clicking on the "return to top" link takes you to the top of the page, even without an element with id #top on the page.