feat: Add detailed changelog and example for SiteLink component

Author: gregfromstl

.changeset/real-cars-sell.md

@@ -2,4 +2,21 @@
 "thirdweb": minor
 ---
 
-Adds SiteLink
+Add SiteLink component for creating wallet-aware links between thirdweb-enabled sites. This component automatically adds wallet connection parameters to the target URL when a wallet is connected, enabling seamless wallet state sharing between sites.
+
+Example:
+```tsx
+import { SiteLink } from "thirdweb/react";
+
+function App() {
+  return (
+    <SiteLink 
+      href="https://thirdweb.com" 
+      client={thirdwebClient} 
+      ecosystem={{ id: "ecosystem.thirdweb" }}
+    >
+      Visit thirdweb.com with connected wallet
+    </SiteLink>
+  );
+}
+```