Update broken link in H99 (#4430)

Link to EPUB 3 page list at the end of the "Description" section

Closes #4429

Co-authored-by: Mike Gower <[email protected]>

Author: patrickhlauke

techniques/html/H99.html

@@ -21,12 +21,12 @@ <h2>Description</h2>
 			<p>The objective of this technique is to ensure that a page-selection mechanism is provided that makes available programmatically all set page locations in the digital publication.</p>
 
 			<p>The page-selection mechanism provides a way to locate static page break locations (i.e., where each new page begins) within a digital publication. These locations typically come from a print equivalent of the edition and allow synchronization in, for example, a mix of print and digital publications in environments such as schools and universities.</p>
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 			<p>The source of pagination is not limited to print but could match up to any statically paginated alternative, such as a <abbr title="Portable Document Format">PDF</abbr> or even a fixed-layout EPUB (i.e., where the content does not reflow to fit the available screen size).</p>
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 			<p>The order of the page break locations in a digital publication is not sequential in all cases, and not all page breaks may be represented. Publishers often rearrange and remove content from the paginated source content when creating a digital version.</p>
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-			<p>Page lists are a central feature of many digital publishing formats. <a href="https://www.w3.org/publishing/epub3/epub-packages.html#sec-nav-pagelist">EPUB 3 defines the page list</a> in its navigation document while EPUB 2 and DAISY 3 use the <a href="http://www.daisy.org/z3986/2005/Z3986-2005.html#NCXElem">pageList element in the NCX</a>. The <a href="https://www.w3.org/TR/dpub-aria-1.0/#doc-pagelist">DPUB-ARIA module</a> also includes a <code class="language-xml">doc-pagelist</code> role for identifying the navigation element containing the page list.</p>
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+			<p>Page lists are a central feature of many digital publishing formats. <a href="https://www.w3.org/TR/epub/#sec-nav-pagelist">EPUB 3 defines the page list</a> in its navigation document while EPUB 2 and DAISY 3 use the <a href="http://www.daisy.org/z3986/2005/Z3986-2005.html#NCXElem">pageList element in the NCX</a>. The <a href="https://www.w3.org/TR/dpub-aria-1.0/#doc-pagelist">DPUB-ARIA module</a> also includes a <code class="language-xml">doc-pagelist</code> role for identifying the navigation element containing the page list.</p>
 
 			<p>Other publications provide a means of page navigation through a 'go to' mechanism.</p>