Update Reference fields from 0 to -1

work.xml

@@ -217,7 +217,7 @@ this repository contains the full copyright notices and license terms. -->
         </record>
         <record model="ir.action.keyword" id="act_work_keyword">
             <field name="keyword">graph_open</field>
-            <field name="model">timesheet.work,0</field>
+            <field name="model">timesheet.work,-1</field>
             <field name="action" ref="act_open_work_graph"/>
         </record>