docs/developers/dapp-developer: fix docs: use combined-json to generated bindings so that they can be deployed

docs/developers/dapp-developer/native-bindings-v2.md

@@ -60,42 +60,62 @@ This contract can be pasted into a text file and saved as `Storage.sol`.
 The following code snippet shows how an ABI can be generated for `Storage.sol` using the Solidity compiler `solc`.
 
 ```shell
-solc --abi Storage.sol -o build
+solc --combined-json abi,bin Storage.sol > Storage.abi
 ```
 
 The ABI can also be generated in other ways such as using the `compile` commands in development frameworks such as [Foundry](https://book.getfoundry.sh/), [Hardhat](https://hardhat.org/) and [Brownie](https://eth-brownie.readthedocs.io/en/stable/) or in the online IDE [Remix](https://remix.ethereum.org/). ABIs for existing verified contracts can be downloaded from [Etherscan](https://etherscan.io/).
 
-The ABI for `Storage.sol` (`Storage.abi`) looks as follows:
+The "combined json" for `Storage.sol` (ABI definition and deployer bytecode in `Storage.abi`) looks as follows:
 
 ```json
-[
-  {
-    "inputs": [],
-    "name": "retrieve",
-    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
-    "stateMutability": "view",
-    "type": "function"
+{
+  "contracts": {
+    "Storage.sol:Storage": {
+      "abi": [
+        {
+          "inputs": [],
+          "name": "retrieve",
+          "outputs": [
+            {
+              "internalType": "uint256",
+              "name": "",
+              "type": "uint256"
+            }
+          ],
+          "stateMutability": "view",
+          "type": "function"
+        },
+        {
+          "inputs": [
+            {
+              "internalType": "uint256",
+              "name": "number",
+              "type": "uint256"
+            }
+          ],
+          "name": "store",
+          "outputs": [],
+          "stateMutability": "nonpayable",
+          "type": "function"
+        }
+      ],
+      "bin": "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"
+    }
   },
-  {
-    "inputs": [{ "internalType": "uint256", "name": "number", "type": "uint256" }],
-    "name": "store",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  }
-]
+  "version": "0.8.28+commit.7893614a.Darwin.appleclang"
+}
 ```
 
 The contract binding can then be generated by passing the ABI to `abigen` as follows:
 
 ```sh
-$ abigen --v2 --abi build/Storage.abi --pkg main --type Storage --out Storage.go
+$ abigen --v2 --combined-json build/Storage.abi --pkg main --type Storage --out Storage.go
 ```
 
 Where the flags are:
 
 - `--v2`: Mandatory flag to specify the newest version of the binding generator.
-- `--abi`: Mandatory path to the contract ABI to bind to
+- `--combined-json`: Mandatory path to the contract combined json (ABI + deployer bytecode) to bind to
 - `--pkg`: Mandatory Go package name to place the Go code into
 - `--type`: Optional Go type name to assign to the binding struct
 - `--out`: Optional output path for the generated Go source file (not set = stdout)