bp_media_settings_callback_extension_link()

function bp_media_settings_callback_extension_link() {

	printf(
		'<label>%s</label>',
		sprintf(
			__( '<a href="%s">Manage</a> which file extensions are allowed to be uploaded.', 'buddyboss' ),
			bp_get_admin_url(
				add_query_arg(
					array(
						'page' => 'bp-settings',
						'tab'  => 'bp-document',
					),
					'admin.php'
				)
			)
		)
	);
}