docs: replace SCRIPT_NAME with baseURL

Author: kenjis

user_guide_src/source/incoming/incomingrequest.rst

@@ -473,7 +473,7 @@ The methods provided by the parent classes that are available are:
 
     .. php:method:: getPath()
 
-        :returns:        The current URI path relative to ``$_SERVER['SCRIPT_NAME']``
+        :returns:        The current URI path relative to baseURL
         :rtype:    string
 
         This is the safest method to determine the "current URI", since ``IncomingRequest::$uri``