style: enable get_class_to_class_keyword fixer

Author: paulbalandan

.php-cs-fixer.dist.php

@@ -39,7 +39,9 @@
         __DIR__ . '/spark',
     ]);
 
-$overrides = [];
+$overrides = [
+    'get_class_to_class_keyword' => true,
+];
 
 $options = [
     'cacheFile'    => 'build/.php-cs-fixer.cache',

user_guide_src/source/libraries/publisher/005.php

@@ -7,6 +7,6 @@
     $result = $publisher->publish();
 
     if ($result === false) {
-        CLI::error(get_class($publisher) . ' failed to publish!', 'red');
+        CLI::error($publisher::class . ' failed to publish!', 'red');
     }
 }