You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20140718153552" timestamp="2014-07-18T15:35:52Z" ns="0" title="Dev-200-pannePartielle.html" />
        <page value="20140724162030" timestamp="2014-07-24T16:20:30Z" ns="0" title="Dev-200-sqlsi.infoChercheurs" />
        <page value="20150326181219" timestamp="2015-03-26T18:12:19Z" ns="0" title="Dev200-accueilAboLettre.php" />
        <page value="20151109093024" timestamp="2015-11-09T09:30:24Z" ns="0" title="Journal de création" />
        <page value="20160202212413" timestamp="2016-02-02T21:24:13Z" ns="0" title="Comptes rendus 2015 MPAPA" />
        <page value="20160202212642" timestamp="2016-02-02T21:26:42Z" ns="0" title="Comptes rendus 2014 MPAPA" />
        <page value="20160215175214" timestamp="2016-02-15T17:52:14Z" ns="0" title="Prête-mémoire à la médiathèque de Muret" />
        <page value="20160215182105" timestamp="2016-02-15T18:21:05Z" ns="0" title="Interventions d&#039;APAïstes à la médiathèque de Muret" />
        <page value="20160415094641" timestamp="2016-04-15T09:46:41Z" ns="0" title="Accueil" />
        <page value="20160711085523" timestamp="2016-07-11T08:55:23Z" ns="0" title="Cahier Le Je à l&#039;œuvre" />
      </results>
    </querypage>
  </query>
</api>