WordPress at a glance
filter is not described

dashboard_secondary_link filter-hook . WP 2.3.0

Filters the secondary link URL for the 'WordPress News' dashboard widget.

Usage

add_filter( 'dashboard_secondary_link', 'filter_function_name_9839' );
function filter_function_name_9839( $link ){
	// filter...

	return $link;
}
$link(string)
The widget's secondary link URL.

Where the hook is called

wp_dashboard_primary()
dashboard_secondary_link
wp-admin/includes/dashboard.php 1321
'link' => apply_filters( 'dashboard_secondary_link', __( 'https://planet.wordpress.org/' ) ),

Where the hook is used (in WP core)

Does not used.