[FIX] lunch: fix typo in widget definition

closes odoo/odoo#40754

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

addons/lunch/report/lunch_cashmove_report_views.xml

@@ -66,7 +66,7 @@
                         <field name="currency_id" invisible="1"/>
                         <field name="user_id" required="1"/>
                         <field name="date"/>
-                        <field name="amount" widget="montary"/>
+                        <field name="amount" widget="monetary"/>
                     </group>
                     <label for='description'/>
                     <field name="description"/>