fix: ship the real DTD in the Pelican plugin

pelican-mews/tests/fixtures/structure/expected.xhtml

@@ -0,0 +1,35 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.2//EN" "http://www.openmobilealliance.org/tech/DTD/xhtml-mobile12.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+<title>Structure</title>
+    <meta name="mews-profile" content="0.1"/>
+    <meta name="viewport" content="width=device-width"/>
+    <link rel="stylesheet" type="text/css" href="css/mews-0.1.css"/></head>
+<body>
+<p>A table, an ordered list and a definition list: everything the placeholder
+DTD used to throw away.</p>
+<table>
+<tr>
+
+<th>Network</th>
+<th>Band</th>
+</tr>
+
+<tr>
+
+<td>GSM 900</td>
+<td>900 MHz</td>
+</tr>
+
+</table>
+<ol>
+<li>First</li>
+<li>Second</li>
+</ol>
+<dl>
+<dt>Term</dt>
+<dd>Its meaning</dd>
+</dl>
+</body>
+</html>

pelican-mews/tests/fixtures/structure/input.md

@@ -0,0 +1,16 @@
+Title: Structure
+Slug: page
+Date: 2026-10-11
+
+A table, an ordered list and a definition list: everything the placeholder
+DTD used to throw away.
+
+| Network | Band |
+| --- | --- |
+| GSM 900 | 900 MHz |
+
+1. First
+2. Second
+
+Term
+:   Its meaning