Update footer links to use https

[brandwaffle]

There are a couple of 10up links that aren't using SSL in the footer area.

10up-experience/includes/classes/AdminCustomizations/Customizations.php

Line 87 in 93e3414

<a class="tenup-badge" href="http://10up.com" target="_blank"><span aria-label="<?php esc_attr_e( 'Link to 10up.com', 'tenup' ); ?>">10up.com</span></a>

10up-experience/includes/classes/AdminCustomizations/Customizations.php

Line 195 in 93e3414

$new_text = sprintf( __( 'Thank you for creating with <a href="https://wordpress.org">WordPress</a> and <a href="http://10up.com">10up</a>.', 'tenup' ) );

These should be updated to ensure we don't have any console warnings.