Fix docs link

contracts/token/ERC721/ERC721.sol

@@ -310,7 +310,8 @@ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable
     }
 
     /**
-     * @dev Same as {ERC721-_safeMint-address-uint256-}, with an additional `data` parameter which is forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
+     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
+     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
      */
     function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
         _mint(to, tokenId);