Rather use (READABLE_)STRING_GENERAL for argument instead of _8 or _32 variant

Better design to set the WSF_REQUEST.path_parameters
   especially handle the case where the request goes trought more than one route (could be the case when using WSF_ROUTING_HANDLER)

library/server/wsf/router/uri/wsf_uri_handler_context.e

@@ -40,7 +40,7 @@ feature -- Request data
 
 feature -- Item		
 
-	item (a_name: READABLE_STRING_32): detachable WSF_VALUE
+	item (a_name: READABLE_STRING_GENERAL): detachable WSF_VALUE
 			-- Variable value for parameter or variable `a_name'
 			-- See `{WSF_REQUEST}.item(s)'
 		do