fix color

docs/components/animation.md

@@ -169,7 +169,7 @@ Supply your own [keyframe formats](https://developer.mozilla.org/en-US/docs/Web/
   .animation-keyframes .box {
     width: 100px;
     height: 100px;
-    background-color: rgb(var(--sl-color-primary-500));
+    background-color: rgb(var(--sl-color-primary-600));
   }
 </style>
 ```