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 lestart="2022-06-20T15:03:51Z" />
  </query-continue>
  <query>
    <logevents>
      <item logid="3286" pageid="0" ns="0" title="Logik-GUI-Zeiten-Heizung-Heizungsschema" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:05:11Z" comment="Inhalt war: „#WEITERLEITUNG [[Logik-GUI-Heizung-Heizungsschema]]“ (einziger Bearbeiter: [[Special:Contributions/Lobenwein|Lobenwein]])" />
      <item logid="3285" pageid="0" ns="6" title="Datei:Uhr.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:04:30Z" comment="" />
      <item logid="3284" pageid="0" ns="6" title="Datei:Hmi master logo voll.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:04:07Z" comment="" />
      <item logid="3283" pageid="0" ns="6" title="Datei:Ss setup pfad.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:04:05Z" comment="" />
      <item logid="3282" pageid="0" ns="6" title="Datei:Ss hmi studio uebersicht.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:04:03Z" comment="" />
      <item logid="3281" pageid="0" ns="6" title="Datei:Ss hmi studio leeres projekt.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:04:00Z" comment="" />
      <item logid="3280" pageid="0" ns="6" title="Datei:Ss hmi studio navi knx.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:03:59Z" comment="" />
      <item logid="3279" pageid="0" ns="6" title="Datei:Ss hmi studio settings knx.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:03:57Z" comment="" />
      <item logid="3278" pageid="0" ns="6" title="Datei:Ss hmi studio settings knx toolb save.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:03:55Z" comment="" />
      <item logid="3277" pageid="0" ns="6" title="Datei:Ss hmi studio button knx edit.png" type="delete" action="delete" user="Lobenwein" timestamp="2022-06-20T15:03:53Z" comment="" />
    </logevents>
  </query>
</api>