[FIX] account: Duplicates a customer invoice

Fine tuning of this commit: a7cd820
When clicking on button "Duplicates" it printed "Duplicate + number". Now it prints
" Duplicate invoice + number" if the customer invoice is of type out_invoice.

opw:708440

addons/account/i18n/account.pot

@@ -394,7 +394,7 @@ msgstr ""
 
 #. module: account
 #: model:ir.ui.view,arch_db:account.account_invoice_report_duplicate
-msgid "<span>Duplicate</span>"
+msgid "<span>invoice</span>"
 msgstr ""
 
 #. module: account
@@ -402,6 +402,11 @@ msgstr ""
 msgid "<span>refund</span>"
 msgstr ""
 
+#. module: account
+#: model:ir.ui.view,arch_db:account.account_invoice_report_duplicate
+msgid "<span>Duplicate</span>"
+msgstr ""
+
 #. module: account
 #: model:ir.ui.view,arch_db:account.account_journal_dashboard_kanban_view
 msgid "<span>New Bill</span>"

addons/account/views/report_invoice.xml

@@ -167,6 +167,7 @@
         <h2>
             <span>Duplicate</span>
             <span t-if="o.type == 'out_refund'">refund</span>
+            <span t-if="o.type == 'out_invoice'">invoice</span>
             <span t-field="o.number"/>
         </h2>
     </xpath>