stargate explorer link.

lottery_SC_guide.md

@@ -22,8 +22,8 @@ dero-wallet-cli-linux-amd64 --wallet-file testnet2.wallet --testnet --rpc-server
 ./explorer-linux-amd64  --rpc-server-address 127.0.0.1:30306 --http-address=0.0.0.0:8080
 ```
 
-**Dero Online Testnet Explorer**  
-[http://pool.dero.io:8080](http://)
+**Dero Stargate Testnet Explorer**  
+[https://testnetexplorer.dero.io/ ](https://testnetexplorer.dero.io/)
 
 
 **Installing Smart Contract.**