Update docs

docs/modules/api/examples/MyNFT.sol

@@ -0,0 +1,9 @@
+// contracts/MyNFT.sol
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
+
+contract MyNFT is ERC721 {
+    constructor() ERC721("MyNFT", "MNFT") {}
+}