Update sepolia.adoc

Author: LandauRaz

components/Starknet/modules/quick-start/pages/sepolia.adoc

@@ -8,7 +8,7 @@ Welcome to the fourth installment of the "Hello, Starknet!" quickstart series, t
 
 Starknet Sepolia is Starknet's testnet environment designed to provide developers with a testing ground that mirrors the behavior of the Starknet Mainnet while being connected to the Ethereum Sepolia testnet, making it ideal for debugging and optimizing your code before deploying it to production. This installment of the series will therefore guide you through the steps necessary to deploy and interact with the `HelloStarknet` contract on Starknet Sepolia.
 
-== Deploying up a new Sepolia account
+== Deploying a new Sepolia account
 
 Similar to interacting with a Starknet Devnet instance, to interact with Starknet Sepolia you first need an account. However, instead fetching a predeployed Sepolia account, we will create a _new_ account and deploy a new Starkli ourselves.