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>
    <alltransclusions gatcontinue="Bayonet|3844" />
  </query-continue>
  <query>
    <pages>
      <page pageid="3783" ns="0" title="6X5 AK bayonet" />
      <page pageid="3817" ns="0" title="BM59 bayonet" />
      <page pageid="3818" ns="0" title="DLT FAMAS bayonet" />
      <page pageid="3819" ns="0" title="E&amp;F Horster M1884/98 bayonet" />
      <page pageid="3822" ns="0" title="E-RM M1949/56 bayonet" />
      <page pageid="3825" ns="0" title="FAL Type C bayonet" />
      <page pageid="3826" ns="0" title="FG-42 Rod-bayonet" />
      <page pageid="3836" ns="0" title="G3 bayonet" />
      <page pageid="3837" ns="0" title="G36 bayonet" />
      <page pageid="3838" ns="0" title="Glock Feldmesser 78 bayonet" />
    </pages>
  </query>
</api>