Improve IFTAS DNI list description

Replace "A curated list of the worst actors on the fediverse" with
clearer wording that describes what to do with the list rather than
characterizing the actors. Links IFTAS to their website.

Follow-up to #2590.

Author: obenland

includes/wp-admin/class-settings-fields.php

@@ -599,7 +599,7 @@ public static function render_blocklist_subscriptions_field() {
 				<button type="button" class="button add-blocklist-subscription-btn" data-url="<?php echo \esc_attr( Blocklist_Subscriptions::IFTAS_DNI_URL ); ?>">
 					<?php \esc_html_e( 'Subscribe to IFTAS DNI List', 'activitypub' ); ?>
 				</button>
-				<?php \esc_html_e( 'A curated list of the worst actors on the fediverse.', 'activitypub' ); ?>
+				<?php echo \wp_kses_post( \__( 'Domains <a href="https://about.iftas.org/" target="_blank" rel="noopener">IFTAS</a> recommends not federating with.', 'activitypub' ) ); ?>
 			</p>
 			<?php endif; ?>
 		</div>