lib/grape_token_auth/mail/messages/password_reset/password_reset.html.erb
<!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>
<h1>Password Reset</h1>
<p>Hello,</p>
<p> A password request has been submitted for your account, in order to
reset your password, please click the link below or copy it into your
browser:</p>
<a href="<%= reset_link %>"><%= reset_link %></a>
<p>If you did not submit this request, please ignore this email</p>
</body>
</html>