Replace externals with internals

Author: markrandall

include/development-links.inc

@@ -16,11 +16,11 @@ return [
         'href_label' => 'View Proposals',
     ],
     [
-        'title' => 'PHP Internals (externals.io)',
-        'about' => 'Browse discussions from PHP Internals about current and future enhancements.',
-        'image' => '/images/landing/externals-io.svg',
-        'href' => 'https://externals.io',
-        'href_label' => 'Browser Externals',
+        'title' => 'PHP Internals',
+        'about' => 'Browse discussions from PHP Internals mailing list about current and future enhancements.',
+        'image' => '/images/logos/new-php-logo.png',
+        'href' => 'https://news-web.php.net/php.internals',
+        'href_label' => 'Browse Mailing List',
     ],
     [
         'title' => 'Get Involved',