README shows base-mainnet withdrawal commands without required --fault-proofs flag

The README contains a “Without Fault Proofs” flow that uses --network base-mainnet without the --fault-proofs flag.

However, the current CLI configuration marks base-mainnet as a fault-proofs network. In main.go, base-mainnet has faultProofs: true, and the CLI exits with “Fault proofs are required on this network, please provide the --fault-proofs flag” when --fault-proofs is not provided.

As a result, users who copy the README command for base-mainnet will get an error instead of proving or finalizing a withdrawal.