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>
    <alllinks galcontinue="オンプレミスからDirectConnect経由でできるだけインターネットを通らないでS3にアクセスする|10" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="メインページ" />
      <page pageid="4" ns="0" title="Amazon Web Service (AWS) 関係のお話" />
      <page pageid="10" ns="0" title="Amazon Web Services (AWS) 関係のお話" />
    </pages>
  </query>
</api>