2021-07-06-update-mail-template-for-contact-form.md

title	issue
Update mail template for contact form	NEXT-15985

Core

• Changed texts in Shopware\Core\Migration\Fixtures\mails\contact_form\en-html.html.twig.
• Added migration \Shopware\Core\Migration\V6_4\Migration1625554302UpdateMailTemplateForContactForm.php.