harmonize the CL-EL representation of the withdrawal amounts

EIPS/eip-4895.md

@@ -41,6 +41,7 @@ Define a new payload-level object called a `withdrawal` that describes withdrawa
 `Withdrawal`s are syntactically similar to a user-level transaction but live in a different domain than user-level transactions.
 
 `Withdrawal`s provide key information from the consensus layer:
+
 1. a monotonically increasing `index`, starting from 0, as a `uint64` value that increments by 1 per withdrawal to uniquely identify each withdrawal
 2. the `validator_index` of the validator, as a `uint64` value, on the consensus layer the withdrawal corresponds to
 3. a recipient for the withdrawn ether `address` as a 20-byte value