docs: remove tab added by lint and expand time bounds description (#1411)

Author: PhilippeR26

www/docs/guides/paymaster.md

@@ -10,20 +10,24 @@ A Paymaster in Starknet allows your account to pay gas fees using alternative to
 STRK.
 
 :::info
+
 There are 2 types of paymaster transaction:
 
 - `default` when the account is paying the fees.
 - `sponsored` when a dApp wants to cover the gas fees on behalf of users.
-  :::
+
+:::
 
 In `starknet.js`, you can interact with a Paymaster in two ways:
 
 - Through the `Account` or `WalletAccount` classes
 - Or directly via the `PaymasterRpc` class
 
 :::warning IMPORTANT
+
 To be able to use the Paymaster, accounts must be compatible with SNIP-9 (Outside execution).  
 See [SNIP-9 compatibility](./outsideExecution.md#check-snip-9-support)
+
 :::
 
 ## Paymaster service
@@ -140,20 +144,26 @@ Optional execution window with `executeAfter` and `executeBefore` dates:
 const feesDetails: PaymasterDetails = {
   feeMode: { mode: 'default', gasToken },
   timeBounds: {
-    executeBefore: Date.now() / 1000 + 60, // 60 seconds
-    executeAfter: Date.now() / 1000,
+    executeBefore: Math.floor(Date.now() / 1000) + 60 * 5, // 5 minutes
   },
 };
 ```
 
 :::note
-Time unit is the Starknet blockchain time unit: seconds.
+
+- Time unit is the Starknet blockchain time unit: seconds.
+- `executeAfter` is optional. If omitted, the transaction can be executed immediately.
+- if `executeAfter` is defined, it must be strictly lower than the timestamp of the last block if you want to be able to process immediately.
+- `executeBefore`: the transaction is possible as long as the Unix time of the SNIP-29 server is lower than executeBefore.
+
 :::
 
 ### Deploy Account
 
 :::warning important
+
 If the account selected in the Wallet extension (Braavos, ArgentX, ...) is not deployed, you can't process a Paymaster transaction.
+
 :::
 
 If necessary, deploy first the account, using: