[ci skip] Merge pull request #5321 from PrestigeT/documentation

Fixed docblock on model function. Changed @param model from string to mixed
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 085c5b5..fe2d437 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -226,7 +226,7 @@
 	 *
 	 * Loads and instantiates models.
 	 *
-	 * @param	string	$model		Model name
+	 * @param	mixed	$model		Model name
 	 * @param	string	$name		An optional object name to assign to
 	 * @param	bool	$db_conn	An optional database connection configuration to initialize
 	 * @return	object