_updateObject doit être async

> It looks to me like there are a few instances of DocumentSheet
> subclasses which fail to correctly mark their _updateObject
> method as async

module/item-sheet.js

@@ -127,7 +127,7 @@ export class RdDItemSheet extends ItemSheet {
   /* -------------------------------------------- */
 
   /** @override */
-  _updateObject(event, formData) {
+  async _updateObject(event, formData) {
     // Données de bonus de cases ?
     formData = RdDItemSort.buildBonusCaseStringFromFormData( formData );
     //console.log("HERE", this, formData, this.object.data );