Update NetworkEquipment.php - Stacked switch Name with ID

Stacked switches got a name with the "description" (model) field, all switches the same, which gives several issues in managing them.

It seems that this was just a wrong copy-paste from the previous code line. Corrected with _$SwitchID  as a common naming scheme.

src/Inventory/Asset/NetworkEquipment.php

@@ -137,7 +137,7 @@ public function prepare(): array
                 $stack->model = $switch->model;
                 $stack->$model_field = $switch->model;
                 $stack->description = $stack->name . ' - ' . ($switch->name ?? $switch->description);
-                $stack->name = $stack->name . ' - ' . ($switch->name ?? $switch->description);
+                $stack->name = $stack->name . '_' . $switch->stack_number;
                 $stack->stack_number = $switch->stack_number ?? null;
                 $this->data[] = $stack;
             }