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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|CSWS_(Continuous_spike_and_wave_during_slow_wave_sleep)" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <links>
          <pl ns="0" title="14 &amp; 6 Hz positive bursts" />
          <pl ns="0" title="4 Hz vertex rhythm" />
          <pl ns="0" title="6 Hz spike-and-wave bursts (WHAM and FOLD)" />
          <pl ns="0" title="Alpha rhythm" />
          <pl ns="0" title="Angelman syndrome" />
          <pl ns="0" title="BIPD (Bilateral independent periodic discharges)" />
          <pl ns="0" title="Benign childhood Epilepsy with CentroTemporal Spikes (=BECTS) or Rolandic epilepsy" />
          <pl ns="0" title="Beta rhythm" />
          <pl ns="0" title="Breach rhythm" />
          <pl ns="0" title="Breathing artifact" />
        </links>
      </page>
    </pages>
  </query>
</api>