Update typescript.mdx

* Change component props type to `any`, as MDX v2 does
  Reference: https://github.com/mdx-js/mdx/blob/v2/packages/react/types/index.d.ts

Closes GH-1213.

Reviewed-by: Christian Murphy <christian.murphy.42@gmail.com>
Reviewed-by: Titus Wormer <tituswormer@gmail.com>

docs/advanced/typescript.mdx

@@ -39,7 +39,7 @@ declare module '@mdx-js/react' {
     | 'ul'
 
   export type Components = {
-    [key in ComponentType]?: React.ComponentType<{children: React.ReactNode}>
+    [key in ComponentType]?: React.ComponentType<any>
   }
 
   export interface MDXProviderProps {