Update StdConfig.sol

Co-authored-by: zerosnacks <95942363+zerosnacks@users.noreply.github.com>

Author: 0xrusowsky

src/StdConfig.sol

@@ -36,6 +36,8 @@ contract StdConfig {
     using LibVariable for TypeKind;
 
     VmSafe private constant vm = VmSafe(address(uint160(uint256(keccak256("hevm cheat code")))));
+
+    /// @dev Types: `bool`, `address`, `bytes32`, `uint`, `ìnt`, `string`, `bytes`.
     uint8 private constant NUM_TYPES = 7;
 
     // -- ERRORS ---------------------------------------------------------------