Add the web address for the second link.

<body><h1>Official documents</h1><p><a href="https://getmimo.com/r/bubu">Article 38</a><br><a href="https://getmimo.com/r/sparkles">Tax law 2019</a></p></body>
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Make sure to click the link to see everything you need to know about taxes.

Start with href, add the = sign, and a quotation mark. Finally, add the link and end with another quotation mark.