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>
    <logevents lecontinue="20180106143457|3178" />
  </query-continue>
  <query>
    <logevents>
      <item logid="3188" ns="0" title="Hauptseite" pageid="1" type="patrol" action="patrol" user="Urs Gamper" timestamp="2018-01-14T12:27:01Z" comment="">
        <patrol cur="3794" prev="3771" auto="1" />
      </item>
      <item logid="3187" ns="0" title="Überblick" pageid="1736" type="patrol" action="patrol" user="Urs Gamper" timestamp="2018-01-06T15:03:47Z" comment="">
        <patrol cur="3793" prev="3791" auto="1" />
      </item>
      <item logid="3186" ns="6" title="Datei:Frontend.png" pageid="1733" img_sha1="1ozuaolcpmzax7j4lk7eegppziciozd" img_timestamp="2018-01-06T15:03:09Z" type="upload" action="overwrite" user="Urs Gamper" timestamp="2018-01-06T15:03:09Z" comment="Mit Version 4.9" />
      <item logid="3185" ns="0" title="Überblick" pageid="1736" type="patrol" action="patrol" user="Urs Gamper" timestamp="2018-01-06T14:59:57Z" comment="">
        <patrol cur="3791" prev="3789" auto="1" />
      </item>
      <item logid="3184" ns="6" title="Datei:Rechteverwaltung.png" pageid="1839" img_sha1="cnfhmcvqvd6szhhh3d6xzwtlzbhmxpr" img_timestamp="2018-01-06T14:59:00Z" type="upload" action="overwrite" user="Urs Gamper" timestamp="2018-01-06T14:59:00Z" comment="Version 4.9" />
      <item logid="3183" ns="0" title="Überblick" pageid="1736" type="patrol" action="patrol" user="Urs Gamper" timestamp="2018-01-06T14:56:00Z" comment="">
        <patrol cur="3789" prev="3770" auto="1" />
      </item>
      <item logid="3182" ns="6" title="Datei:Artikel erstellen.png" pageid="1454" img_sha1="o718vtxtry69iyvo9ci7cpwezzcvn9v" img_timestamp="2018-01-06T14:54:54Z" type="upload" action="overwrite" user="Urs Gamper" timestamp="2018-01-06T14:54:54Z" comment="Version 4.9" />
      <item logid="3181" ns="6" title="Datei:Backend.png" pageid="1734" type="delete" action="delete" user="Urs Gamper" timestamp="2018-01-06T14:50:08Z" comment="alte Version 20180106143457!Backend.png gelöscht" />
      <item logid="3180" ns="6" title="Datei:Backend.png" pageid="1734" type="delete" action="delete" user="Urs Gamper" timestamp="2018-01-06T14:49:39Z" comment="alte Version 20180106144906!Backend.png gelöscht" />
      <item logid="3179" ns="6" title="Datei:Backend.png" pageid="1734" img_sha1="37brd5k53sjajhd25irog025za21k0o" img_timestamp="2018-01-06T14:49:06Z" type="upload" action="overwrite" user="Urs Gamper" timestamp="2018-01-06T14:49:06Z" comment="Version 4.9 png" />
    </logevents>
  </query>
</api>