Updated URL (#894)

Author: irffanasiff

README.md

@@ -2,7 +2,7 @@
 
 Modular TypeScript wallet adapters and components for Solana applications.
 
-- [Demo](https://solana-labs.github.io/wallet-adapter/example/)
+- [Demo](https://anza-xyz.github.io/wallet-adapter/)
 - [TypeScript Docs](https://solana-labs.github.io/wallet-adapter/)
 - [For Solana Apps](https://github.com/solana-labs/wallet-adapter/blob/master/APP.md)
 - [For Solana Wallets](https://github.com/solana-labs/wallet-adapter/blob/master/WALLET.md)