Fix: lifecycle update example overflow problem

site/content/tutorial/07-lifecycle/03-update/app-a/App.svelte

@@ -88,6 +88,7 @@
 		background-color: #0074D9;
 		color: white;
 		border-radius: 1em 1em 0 1em;
+		word-break: break-all;
 	}
 </style>
 

site/content/tutorial/07-lifecycle/03-update/app-b/App.svelte

@@ -88,6 +88,7 @@
 		background-color: #0074D9;
 		color: white;
 		border-radius: 1em 1em 0 1em;
+		word-break: break-all;
 	}
 </style>