You echo value of the field, so you get what you do 😉 There is no way to make ACF print it your way. You have to wrap it yourself.
Here’s a code that would do exactly that:
<?php if ( get_field('svcta_contact_information_group_svcta_contact_website') ) : ?>
<div class="svcta-contact-website" id="svcta-id-contact-website">
<strong>Contact Website:</strong>
<a href="https://wordpress.stackexchange.com/questions/304107/<?php echo esc_attr( get_field("svcta_contact_information_group_svcta_contact_website') ); ?>">Link Caption</a>
</div>
<?php endif; ?>