Update annotations-reference.rst

Dragonrun1 · Dragonrun1 · commit 01dc0e827318 · 2013-11-03T09:20:15.000-08:00
@jointable because of mapping defaults does NOT have required attributes. Updated annotations reference to show them as optional.
diff --git a/docs/en/reference/annotations-reference.rst b/docs/en/reference/annotations-reference.rst
@@ -519,7 +519,7 @@ details of the database join table. If you do not specify
 @JoinTable on these relations reasonable mapping defaults apply
 using the affected table and the column names.
 
-Required attributes:
+Optional attributes:
 
 
 -  **name**: Database name of the join-table
