magento-test/app/code/Magento/Sales/Test/Mftf/Data/OrderCommentsData.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<entities xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:mftf:DataGenerator/etc/dataProfileSchema.xsd">
    <entity name="SalesOrderComments" type="order">
        <data key="commentWithHyperlink">&#x3C;a href=&#x22;https://business.adobe.com/products/magento/magento-commerce.html&#x22;&#x3E;Testing Html Tags&#x3C;/a&#x3E;</data>
    </entity>
    <entity name="anchorTagFragment" type="string">
        <data key="anchorTag">a href</data>
    </entity>
</entities>