docs: update button markup for getting started guide (#5405)

asyncliz · web-flow · commit c8bb8dd49747 · 2020-01-06T12:06:12.000-06:00
diff --git a/docs/getting-started.md b/docs/getting-started.md
@@ -236,7 +236,8 @@ Then add `postcss-loader`, using `autoprefixer` as a plugin:
 ```html
 <body>
   <button class="foo-button mdc-button">
-    Button
+    <div class="mdc-button__ripple"></div>
+    <span class="mdc-button__label">Button</span>
   </button>
 </body>
 ```
