chore: added links to EIP-1559 for max fee and max priority fee per gas

Author: JeneaVranceanu

Sources/Core/Transaction/Policies.swift

@@ -13,8 +13,8 @@ public typealias NoncePolicy = BlockNumber
 /// Policies for resolving values like:
 /// - gas required for transaction execution
 /// - gas price
-/// - maximum fee per gas
-/// - maximum priority fee per gas
+/// - maximum fee per gas (see [EIP-1559](https://eips.ethereum.org/EIPS/eip-1559))
+/// - maximum priority fee per gas (see [EIP-1559](https://eips.ethereum.org/EIPS/eip-1559))
 public enum ValueResolutionPolicy {
     /// What ever value will be resolved is the one to be applied
     case automatic