add find children href url in paragraph

components/mdx/paragraph.tsx

@@ -0,0 +1,26 @@
+import React from 'react';
+import { HTMLAttributes } from 'react';
+
+const Paragraph = (props: HTMLAttributes<HTMLParagraphElement>) => {
+  const { children, ...rest } = props;
+
+  // Find anchor href url in children
+  const links = React.Children.map(children, (child) => {
+    if (!React.isValidElement(child)) return null;
+    if (typeof child.type !== 'object') return null;
+    const childType = child.type as any;
+    if (!childType?.type) return null;
+    if (childType.type.render.displayName !== 'Anchor') return null;
+    const props = child.props as { href: string };
+    return props.href;
+  });
+
+  return (
+    <>
+      <p {...rest}>{children}</p>
+      {links?.map((url, i) => <div key={i}>{url}</div>)}
+    </>
+  );
+};
+
+export default Paragraph;