minor improvement to 'urlseparator' short help

content/vimperator.js

@@ -377,7 +377,7 @@ liberator.config = { //{{{
             });
 
         liberator.options.add(["urlseparator"],
-            "Set the separator regexp used to split URL args",
+            "Set the separator regexp used to separate multiple URL args",
             "string", ",\\s");
     }
     //}}}