Fix voucher class description

django_lostplaces/lostplaces/models/models.py

@@ -41,11 +41,13 @@ def save_user_profile(sender, instance, **kwargs):
 
 class Voucher(Expireable):
     """
-    Vouchers are authorization to    created_when = models.DateTimeField(auto_now_add=True)
-    expires_when = models.DateTimeField()kens to allow the registration of new users.
+    Vouchers are authorization tokens to allow the registration of new users.
     A voucher has a code, a creation and a deletion date, which are all 
     positional. Creation date is being set automatically during voucher 
     creation. 
+
+    created_when = models.DateTimeField(auto_now_add=True)
+    expires_when = models.DateTimeField()
     """
 
     code = models.CharField(unique=True, max_length=30)