fix: deployment command (#295)

* fix: deployment command in deploy.mdx

* update: deployment explanation

src/pages/world-chain/developers/deploy.mdx

@@ -100,10 +100,11 @@ group chat on [Telegram](https://t.me/worldcoindevelopers) or [Discord](https://
 Now that you have a wallet and you funded it with World Chain Sepolia ETH, you can deploy the `HelloWorldChain` contract to World Chain Sepolia using the following `forge create` command:
 
 ```bash {{title: "Deploy the contract"}}
-forge create src/HelloWorldChain.sol --rpc-url 	https://worldchain-sepolia.g.alchemy.com/public --private-key 0xcc1b30a6af68ea9a9917f1dda20c927704c5cdb2bbe0076901a8a0e40bf997c5
+forge create src/HelloWorldChain.sol:HelloWorldChain --rpc-url https://worldchain-sepolia.g.alchemy.com/public --private-key 0xcc1b30a6af68ea9a9917f1dda20c927704c5cdb2bbe0076901a8a0e40bf997c5
 ```
 
-Here we are using the `--rpc-url` flag to specify the RPC URL of the World Chain Sepolia network and the <br />`--private-key` flag to specify the private key of the wallet we generated earlier. 
+Here, we are using the <path>:<contractname> format to specify the contract. This tells Foundry where to find the contract file (src/HelloWorldChain.sol) and which contract within the file (HelloWorldChain) to deploy.
+We also use the `--rpc-url` flag to specify the RPC URL of the World Chain Sepolia network and the <br />`--private-key` flag to specify the private key of the wallet we generated earlier. 
 On top of this we can also provide other flags like `-vvvvv` to get more verbose output from the deployment process, `--verify` to verify the contract on [Worldscan](https://worldscan.org) or [Blockscout](https://worldchain-sepolia.explorer.alchemy.com/) (alongside with an `--etherscan-api-key` flag) and 
 several other flags to toggle different features that you can find more about in the [Foundry documentation](https://book.getfoundry.sh/).