This is final step to verify and publish your contract in Etherscan. This will help Etherscan to display your ERC20 Token correctly.

Go to Etherscan Ropsten Testnet:

Search your token by token address.

In your ERC20 Token contract page, you choose Contract Code tab, click to Verify and Publish* link.

In Verify Contract Code screen, you input the parameters as the below:

Go to site Convert Ethereum ABI Online to generate Contructor Arguments ABI-encoded.

Copy-Paste into the textbox and click Submit

If success, we will see the screen below:

And your contract page in Etherscan will have Contract Source tab

Now, we finish the turorial here.