refactor: update protectData documentation to include AR.io as an additional option for decentralized storage, enhancing clarity on data privacy and security features

Author: akugone

src/overview/helloWorld/2-protectData.md

@@ -24,8 +24,9 @@ their dApps with these key features:
 - 🔐 **Data Privacy and Security**
 
   Utilizes end-to-end encryption and decentralized storage
-  (<a href="https://ipfs.tech/" target="_blank">IPFS</a>) to ensure protection
-  and confidentiality, leveraging advanced confidential computing technology.
+  (<a href="https://ipfs.tech/" target="_blank">IPFS</a> or
+  <a href="https://ar.io/" target="_blank">AR.io</a>) to ensure protection and
+  confidentiality, leveraging advanced confidential computing technology.
 
 - 🎮 **Dynamic Access Management**