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="20180120154356|146" />
  </query-continue>
  <query>
    <logevents>
      <item logid="156" ns="2" title="Utente:Koenig" pageid="0" userid="29" type="newusers" action="byemail" user="Stefano Simoni" timestamp="2023-08-29T10:43:35Z" comment="Attivazione AstroWiki" />
      <item logid="155" ns="2" title="Utente:Armando31" pageid="0" userid="28" type="newusers" action="byemail" user="Stefano Simoni" timestamp="2022-04-19T08:03:59Z" comment="Abilitazione astrowiki" />
      <item logid="154" ns="2" title="Utente:Manzonis" pageid="0" userid="27" type="newusers" action="byemail" user="Stefano Simoni" timestamp="2022-01-08T08:45:59Z" comment="Richiesta contribuzione Astrowiki" />
      <item logid="153" ns="2" title="Utente:Save" pageid="0" userid="26" type="newusers" action="byemail" user="Stefano Simoni" timestamp="2020-04-18T07:51:47Z" comment="Attivazione AstroWiki" />
      <item logid="152" ns="2" title="Utente:Mazzolatore" pageid="0" userid="25" type="newusers" action="byemail" user="Stefano Simoni" timestamp="2018-07-26T14:15:41Z" comment="Accesso all&#039;area AstroWiki" />
      <item logid="151" ns="0" title="Meccanica Celeste" pageid="328" type="patrol" action="patrol" user="Stefano Simoni" timestamp="2018-01-25T15:13:37Z" comment="">
        <patrol cur="516" prev="477" auto="1" />
      </item>
      <item logid="150" ns="0" title="Librazione" pageid="335" type="patrol" action="patrol" user="Stefano Simoni" timestamp="2018-01-23T09:12:39Z" comment="">
        <patrol cur="515" prev="514" auto="1" />
      </item>
      <item logid="149" ns="0" title="Librazione" pageid="335" type="patrol" action="patrol" user="Stefano Simoni" timestamp="2018-01-23T09:12:05Z" comment="">
        <patrol cur="514" prev="0" auto="1" />
      </item>
      <item logid="148" ns="0" title="Velocità di fuga" pageid="334" type="patrol" action="patrol" user="Stefano Simoni" timestamp="2018-01-23T09:09:06Z" comment="">
        <patrol cur="513" prev="0" auto="1" />
      </item>
      <item logid="147" ns="0" title="Pagina principale" pageid="1" type="patrol" action="patrol" user="Stefano Simoni" timestamp="2018-01-22T10:15:30Z" comment="">
        <patrol cur="512" prev="511" auto="1" />
      </item>
    </logevents>
  </query>
</api>