Remove Goerli and update with Sepolia testnet

[allwin199]

deploying-our-contract

Examples of deploying smart contracts contain details about the "Goerli" testnet

I think it should be updated to the "Sepolia" network

If this update needs to be made, I am willing to contribute.

[Evalir]

definitely needs to be made @allwin199 — feel free to take it!

[allwin199]

@Evalir Faucets In this faucet link, there is no Sepolia testnet available.

Let me know If I have to link any other faucets.

[yash251]

deploying-our-contract

you can use https://sepoliafaucet.com/ @allwin199

[allwin199]

@Evalir can you confirm that I can include the above faucet in the docs

[Evalir]

@allwin199 feel free to go ahead, i can review once you have the pr