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>
    <links gplcontinue="1|0|Ingredients" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2974" ns="0" title="Attenuation" contentmodel="wikitext" pagelanguage="en" touched="2016-03-20T17:50:48Z" lastrevid="14807" counter="" length="10460" />
      <page pageid="1436" ns="0" title="Beer Quotes" contentmodel="wikitext" pagelanguage="en" touched="2011-01-23T19:54:59Z" lastrevid="4843" counter="" length="5126" />
      <page pageid="1396" ns="0" title="Beer Styles" contentmodel="wikitext" pagelanguage="en" touched="2017-02-08T14:58:10Z" lastrevid="5953" counter="" length="4252" />
      <page pageid="1519" ns="0" title="Body" contentmodel="wikitext" pagelanguage="en" touched="2008-03-02T23:33:50Z" lastrevid="4506" counter="" length="2548" />
      <page pageid="1373" ns="0" title="Brewing Your First Beer" contentmodel="wikitext" pagelanguage="en" touched="2015-09-02T15:48:58Z" lastrevid="14078" counter="" length="14200" />
      <page pageid="1412" ns="0" title="Craft Beer" contentmodel="wikitext" pagelanguage="en" touched="2015-10-15T15:05:44Z" lastrevid="14096" counter="" length="4344" />
      <page pageid="1401" ns="0" title="Equipment" contentmodel="wikitext" pagelanguage="en" touched="2008-04-27T15:34:36Z" lastrevid="4584" counter="" length="716" />
      <page pageid="1460" ns="0" title="Estimating Color" contentmodel="wikitext" pagelanguage="en" touched="2008-05-17T07:08:43Z" lastrevid="4599" counter="" length="2055" />
      <page pageid="2978" ns="0" title="Grain Mill" contentmodel="wikitext" pagelanguage="en" touched="2012-05-03T12:55:14Z" lastrevid="7702" counter="" length="2848" />
      <page pageid="1466" ns="0" title="Head Retention" contentmodel="wikitext" pagelanguage="en" touched="2013-07-22T13:32:15Z" lastrevid="13602" counter="" length="6535" />
    </pages>
  </query>
</api>