Update user_guide_src/source/libraries/loader.rst

Remove the second parameter
diff --git a/user_guide_src/source/libraries/loader.rst b/user_guide_src/source/libraries/loader.rst
index 33c1baf..615aba1 100644
--- a/user_guide_src/source/libraries/loader.rst
+++ b/user_guide_src/source/libraries/loader.rst
@@ -344,6 +344,6 @@
 	$this->load->remove_package_path(APPPATH.'my_app');
 
 	// Again without the second parameter:
-	$this->load->add_package_path(APPPATH.'my_app', TRUE);
+	$this->load->add_package_path(APPPATH.'my_app');
 	$this->load->view('my_app_index'); // Loads
 	$this->load->view('welcome_message'); // Loads