docs: improve getting started chapters (#10014)

www/apps/book/components/MDXComponents/index.tsx

@@ -1,9 +1,11 @@
 import type { MDXComponents as MDXComponentsType } from "mdx/types"
 import { Link, MDXComponents as UiMdxComponents } from "docs-ui"
+import Feedback from "../Feedback"
 
 const MDXComponents: MDXComponentsType = {
   ...UiMdxComponents,
   a: Link,
+  Feedback,
 }
 
 export default MDXComponents