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="20200615155610|1215" />
  </query-continue>
  <query>
    <logevents>
      <item logid="1225" action="patrol" ns="0" title="TEL Dictionary entries" pageid="2" logpage="2" type="patrol" user="Admin" timestamp="2020-06-15T18:19:36Z" comment="">
        <patrol cur="1446" prev="1445" auto="1" />
      </item>
      <item logid="1224" action="patrol" ns="0" title="TEL Dictionary entries" pageid="2" logpage="2" type="patrol" user="Admin" timestamp="2020-06-15T18:19:26Z" comment="">
        <patrol cur="1445" prev="1443" auto="1" />
      </item>
      <item logid="1223" action="rights" ns="2" title="User:Sharples" pageid="0" logpage="0" type="rights" user="Admin" timestamp="2020-06-15T18:18:45Z" comment="">
        <rights new="sysop, bureaucrat, editor" old="sysop" />
      </item>
      <item logid="1222" action="rights" ns="2" title="User:Admin" pageid="0" logpage="0" type="rights" user="Admin" timestamp="2020-06-15T18:14:06Z" comment="">
        <rights new="bureaucrat, sysop, editor" old="bureaucrat, sysop" />
      </item>
      <item logid="1221" action="delete" ns="1" title="Talk:Agent-based tutoring system" pageid="0" logpage="168" type="delete" user="Admin" timestamp="2020-06-15T16:09:27Z" comment="content was: &quot;...&quot; (and the only contributor was &quot;[[Special:Contributions/Admin|Admin]]&quot;)" />
      <item logid="1220" action="patrol" ns="1" title="Talk:Agent-based tutoring system" pageid="0" logpage="168" type="patrol" user="Admin" timestamp="2020-06-15T16:09:00Z" comment="">
        <patrol cur="1444" prev="0" auto="1" />
      </item>
      <item logid="1219" action="protect" ns="0" title="Agent-based tutoring system" pageid="0" logpage="0" type="protect" user="Admin" timestamp="2020-06-15T16:08:49Z" comment="">
        <param>‎[create=sysop] (indefinite)</param>
        <param />
      </item>
      <item logid="1218" action="patrol" ns="0" title="TEL Dictionary entries" pageid="2" logpage="2" type="patrol" user="Admin" timestamp="2020-06-15T15:59:56Z" comment="">
        <patrol cur="1443" prev="1442" auto="1" />
      </item>
      <item logid="1217" action="unprotect" ns="0" title="Computational thinking" pageid="0" logpage="0" type="protect" user="Admin" timestamp="2020-06-15T15:58:17Z" comment="" />
      <item logid="1216" action="patrol" ns="0" title="TEL Dictionary entries" pageid="2" logpage="2" type="patrol" user="Admin" timestamp="2020-06-15T15:56:56Z" comment="">
        <patrol cur="1442" prev="1441" auto="1" />
      </item>
    </logevents>
  </query>
</api>