chore: update guides

Author: badurinantun

www/guides/account.md

@@ -54,16 +54,9 @@ Wait for the deployment transaction to be accepted and assign the address of the
 
 ```javascript
 await defaultProvider.waitForTransaction(accountResponse.transaction_hash);
-const accountContract = new Contract(
-  compiledAccount.abi,
-  accountResponse.address
-);
-const initializeResponse = await accountContract.initialize(starkKeyPub, "0");
-
-await defaultProvider.waitForTransaction(initializeResponse.transaction_hash);
 ```
 
-Once account contract is initialized [Account](../docs/API/account.md) instance can be created. Use your new account instance to sign transactions, messages or verify signatures!
+Once account contract is deployed [Account](../docs/API/account.md) instance can be created. Use your new account instance to sign transactions, messages or verify signatures! Make sure your Account has enough funds to execute invocations.
 
 ```js
 const account = new Account(

www/guides/erc20.md

@@ -29,10 +29,13 @@ const erc20 = new Contract(compiledErc20.abi, erc20Address);
 Make sure you created the `Account` instance following the [Creating an Account](./account.md) guide.
 
 ```javascript
+erc20.connect(account);
+
 const { transaction_hash: mintTxHash } = await erc20.mint(
   account.address,
   "1000"
 );
+
 console.log(`Waiting for Tx to be Accepted on Starknet - Minting...`);
 await defaultProvider.waitForTransaction(mintTxHash);
 ```