Change the default contact form email template to HTML

Author: VincentMarmiesse

app/code/Magento/Contact/etc/email_templates.xml

@@ -6,5 +6,5 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Email:etc/email_templates.xsd">
-    <template id="contact_email_email_template" label="Contact Form" file="submitted_form.html" type="text" module="Magento_Contact" area="adminhtml"/>
+    <template id="contact_email_email_template" label="Contact Form" file="submitted_form.html" type="html" module="Magento_Contact" area="frontend"/>
 </config>

app/code/Magento/Contact/view/adminhtml/email/submitted_form.html

@@ -0,0 +1,24 @@
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<!--@subject {{trans "Contact Form"}} @-->
+<!--@vars {
+"var data.comment":"Comment",
+"var data.email":"Sender Email",
+"var data.name":"Sender Name",
+"var data.telephone":"Sender Telephone"
+} @-->
+
+{{template config_path="design/email/header_template"}}
+
+<ul>
+    <li>{{trans "Name: %name" name=$data.name}}</li>
+    <li>{{trans "Email: %email" email=$data.email}}</li>
+    <li>{{trans "Phone Number: %telephone" telephone=$data.telephone}}</li>
+    <li>{{trans "Comment: %comment" comment=$data.comment}}</li>
+</ul>
+
+{{template config_path="design/email/footer_template"}}