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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.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <links plcontinue="1|0|The_Upper_Colorado_River_Endangered_Fish_Recovery_and_San_Juan_River_Basin_Recovery_Implementation_Programs" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <links>
          <pl ns="0" title="A Salty Affair: An Analysis of U.S. – Mexico Water Diplomacy in the Colorado River" />
          <pl ns="0" title="Browse Cases" />
          <pl ns="0" title="Forming A Groundwater Sustainability Agency for Salinas Valley" />
          <pl ns="0" title="Forming Groundwater Sustainability Agencies for Sonoma County" />
          <pl ns="0" title="Multi-State Approaches to Environmental Restoration in the Chesapeake Bay and Water Diplomacy Framework Opportunities" />
          <pl ns="0" title="Petaluma Valley Groundwater Subbasin" />
          <pl ns="0" title="Russian River" />
          <pl ns="0" title="Santa Rosa Plain Groundwater Subbasin" />
          <pl ns="0" title="Sonoma Creek" />
          <pl ns="0" title="Sonoma Valley Groundwater Subbasin" />
        </links>
      </page>
    </pages>
  </query>
</api>