Issue #2842480 by amateescu: system_update_8203() is named incorrectly

core/modules/system/system.install

@@ -1785,12 +1785,20 @@ function system_update_8202() {
  * @} End of "addtogroup updates-8.2.3".
  */
 
+/**
+ * @addtogroup updates-8.3.0
+ * @{
+ */
+
 /**
  * Add detailed cron logging configuration.
  */
-function system_update_8203() {
-  $config_factory = \Drupal::configFactory();
-  $system_cron_config = $config_factory->getEditable('system.cron')
+function system_update_8300() {
+  \Drupal::configFactory()->getEditable('system.cron')
     ->set('logging', 1)
     ->save(TRUE);
 }
+
+/**
+ * @} End of "addtogroup updates-8.3.0".
+ */