HotFix: small HTML fixes

app/ui/BillEditForm.tsx

@@ -132,7 +132,7 @@ export const BillEditForm:FC<BillEditFormProps> = ({ location, bill }) => {
                     barcodeImage ?
                     <div className="form-control p-1">
                         <label className="cursor-pointer label p-2 grow bg-white">
-                            <img src={barcodeImage} className="grow sm:max-w-[350px]" />
+                            <img src={barcodeImage} className="grow sm:max-w-[350px]" alt="2D Barcode" />
                         </label>
                         <p className="text-xs my-1">After scanning the code make sure the information is correct.<br/>We are not liable in case of an incorrect payment.</p>
                     </div> : null