Small accessibility issue #2919

Many heading tags include anchors like this:

<h3 id="files-outside-the-web-root"><a class="anchor" href="#files-outside-the-web-root">
<svg class="octicon octicon-link" viewBox="0 0 16 16" aria-hidden="true" width="16" height="16">
<!-- ... -->
</svg></a>Files Outside the Web Root</h3>

Even though the SVG has aria-hidden="true" on it, screen readers still show it, which causes it to speak part of the url, followed by the rest of the text in the heading.

Thus, placing aria-hidden="true" on the enclosing a tag completely mitigates this behavior. Please consider doing this!

Love your site; more people need to leverage the browser and stop relying on bloated frameworks! The browser has come a very long way in the past decade, and we should thank the folks working tirelessly to develop the standards upon which this platform rests.

-- Rich