fixed hyperlink to adv datamapping

diff --git a/doc/build/content/tutorial.txt b/doc/build/content/tutorial.txt
index 44c5c2db15ffe6dad2412b23cf7bacb3c7e99fa3..80f2d447228af093a75a5b5fa5d49f972e425e64 100644 (file)
--- a/doc/build/content/tutorial.txt
+++ b/doc/build/content/tutorial.txt
@@ -357,7 +357,7 @@ At the moment, nothing has been saved to the database; all of our changes are in
     
 With the identity map, a single `Session` can be relied upon to keep all loaded instances straight.
 
-As far as the issue of the same object being modified in two different Sessions, that's an issue of concurrency detection; SQLAlchemy does some basic concurrency checks when saving objects, with the option for a stronger check using version ids.  See [adv_datamapping](rel:adv_datamapping) for more details.
+As far as the issue of the same object being modified in two different Sessions, that's an issue of concurrency detection; SQLAlchemy does some basic concurrency checks when saving objects, with the option for a stronger check using version ids.  See [advdatamapping_arguments](rel:advdatamapping_arguments) for more details.
 
 ### Saving {@name=saving}