Use the new stock.supply wizard in scenario

issue6271
review33831002

tests/scenario_purchase_request.rst

@@ -143,7 +143,7 @@ There is no purchase request::
 
 Create the purchase request::
 
-    >>> create_pr = Wizard('purchase.request.create')
+    >>> create_pr = Wizard('stock.supply')
     >>> create_pr.execute('create_')
 
 There is now a draft purchase request::
@@ -202,7 +202,7 @@ Handle again the exception::
 
 Re-create the purchase request::
 
-    >>> create_pr = Wizard('purchase.request.create')
+    >>> create_pr = Wizard('stock.supply')
     >>> create_pr.execute('create_')
 
 Create a second purchase request manually::