Fix success messages

aleksis/apps/tezor/views.py

@@ -148,7 +148,7 @@ class InvoiceGroupCreateView(PermissionRequiredMixin, AdvancedCreateView):
     permission_required = "tezor.create_invoice_groups_rule"
     template_name = "tezor/invoice_group/create.html"
     success_url = reverse_lazy("clients")
-    success_message = _("The invoice_group has been created.")
+    success_message = _("The invoice group has been created.")
 
     def form_valid(self, form):
         client = Client.objects.get(id=self.kwargs["pk"])
@@ -170,7 +170,7 @@ class InvoiceGroupEditView(PermissionRequiredMixin, AdvancedEditView):
     permission_required = "tezor.edit_invoice_group_rule"
     template_name = "tezor/invoice_group/edit.html"
     success_url = reverse_lazy("invoice_groups")
-    success_message = _("The invoice_group has been saved.")
+    success_message = _("The invoice group has been saved.")
 
 
 class InvoiceGroupDeleteView(PermissionRequiredMixin, AdvancedDeleteView):
@@ -180,7 +180,7 @@ class InvoiceGroupDeleteView(PermissionRequiredMixin, AdvancedDeleteView):
     permission_required = "tezor.delete_invoice_group_rule"
     template_name = "core/pages/delete.html"
     success_url = reverse_lazy("invoice_groups")
-    success_message = _("The invoice_group has been deleted.")
+    success_message = _("The invoice group has been deleted.")
 
 
 class InvoiceDetailView(PermissionRequiredMixin, DetailView):