fix: worker readme

Co-authored-by: Kresh <[email protected]>

src/examples/sqrt-task-network/worker/README.md

@@ -9,7 +9,7 @@ This is a worker implementation for the Sqrt Task Network example. The worker li
 - Access to a Holesky Ethereum node
 - Private key for validator (used to sign task results and operator registration)
 - Private key for operator (used to submit transactions to the network and in core)
-- Some Holesky ETH in the operator and validator account for gas fees
+- Have at least 0.05 Holesky ETH in the operator and validator account each for gas fees
 - Registration in `OperatorRegistry` and opt-in in `NetworkOptInService` to the network ([see example](https://docs.symbiotic.fi/handbooks/operators-handbook#actions-in-symbiotic-core))
     - Network: [0x18586B8cb86b59EF3F44BC915Ef92C83B6BAfd75](https://holesky.etherscan.io/address/0x18586B8cb86b59EF3F44BC915Ef92C83B6BAfd75)