Update location.rst

#104 - added link to changes guidance page (@Bjwebb - can you check the link?)

en/activity-standard/iati-activities/iati-activity/location.rst

@@ -15,7 +15,12 @@ Changelog
 1.04
 ^^^^
 
-Note that major changes were made to the subelements of ``location`` in version 1.04, see the :ref:`Activities Schema Changelog <1_04_activities_schema_changes>` (or the individual subemelement pages) for more information.
+Note that major changes were made to the subelements of ``location`` in version 1.04.  
+
+| For more information refer to: 
+
+* the :ref:`1.04 location changes overview guidance </upgrades/decimal-upgrade-to-1-04/location-summary/>`
+* the :ref:`Activities Schema Changelog <1_04_activities_schema_changes>` (or the individual subemelement pages)
 
 | The @ref attribute was introduced to provide a cross reference that a publisher can use to link back to their own internal system.
 | The @percentage attribute was deemed unworkable and deprecated in 1.04