doc: add param docstring

Author: heueristik

src/drafts/XanV2.sol

@@ -29,6 +29,7 @@ contract XanV2 is IXanV2, XanV1 {
 
     /// @notice Initializes the proxy.
     /// @param initialMintRecipient The initial recipient of the minted tokens.
+    /// @param council The address of the governance council contract.
     /// @param xanV2Forwarder The XanV2 forwarder contract.
     /// @custom:oz-upgrades-validate-as-initializer
     // solhint-disable-next-line comprehensive-interface