Single post navigation customisation

[Tarki]

Hello all,

I've added the following to functions.php of my child theme and now I've single post navigation which is great. I'd like to put a text with a link to a specific page in the middle of "previous" and "next" links though. What should I add/change in the following code?

/**next previous post */
add_action('genesis_after_post_content', 'test_single_nav', 20);
function test_single_nav() {
if( is_single() ) {
echo '<div id="single-navigation" class="navigation">';
echo '<span class="alignleft">';
previous_post_link();
echo '</span>';
echo '<span class="alignright">';
next_post_link();
echo '</span>';
echo '</div>';
}

Thank you very much in advance and regards,
Tarki