Merge pull request #14586 from owncloud/proper-appcodechecker-docu

proper description of appcodechecker in config sample

config/config.sample.php

@@ -420,8 +420,9 @@ $CONFIG = array(
  */
 
 /**
- * Check 3rd party apps to make sure they are using the private API and not the
- * public API. If the app uses the private API it cannot be installed.
+ * Checks an app before install whether it uses private APIs instead of the 
+ * proper public APIs. If this is set to true it will just allow to install or 
+ * enable apps that pass this check.
  */
 'appcodechecker' => true,