[AA Provider] Improve Batch Transaction docs

docs/sdk/pnp/web/providers/aa-provider.mdx

@@ -266,6 +266,12 @@ transaction, you'll need to use the `BundlerClient` generated by the `AccountAbs
 The Web3Auth instance provider can't be used for this, as it's a proxy provider designed to ensure
 compatibility with your preferred signer package for basic operations.
 
+The `BundlerClient.sendUserOperation` returns the UserOperation hash instead of transaction hash.
+UserOperation hash is just keccak256 hash of the entire user operation. To retreive the tranaction
+details, we need to use `waitForUserOperationReceipt`. The function will wait for the UserOperation
+to be included in a block, and will return a full UserOperation, with the addition of entryPoint,
+blockNumber, blockHash and transactionHash.
+
 ```ts
 // Use the same accountAbstractionProvider we created earlier.
 const bundlerClient = accountAbstractionProvider.bundlerClient!;
@@ -288,6 +294,13 @@ const userOperationHash = await bundlerClient.sendUserOperation({
     },
   ],
 });
+
+// Retrieve user operation receipt
+const receipt = await bundlerClient.waitForUserOperationReceipt({
+  hash: userOpHash,
+});
+
+const transactionHash = receipt.receipt.transactionHash;
 ```
 
 ### Send transaction using ERC-20 Paymaster
@@ -314,7 +327,7 @@ const usdcAddress = "0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238";
 
 const amount = ethers.parseEther("0.00001");
 
-const tx = await bundlerClient.sendUserOperation({
+const userOpHash = await bundlerClient.sendUserOperation({
   account: smartAccount,
   calls: [
     // Approve USDC on Sepolia chain for Pimlico's ERC 20 Paymaster
@@ -336,4 +349,11 @@ const tx = await bundlerClient.sendUserOperation({
     },
   ],
 });
+
+// Retrieve user operation receipt
+const receipt = await bundlerClient.waitForUserOperationReceipt({
+  hash: userOpHash,
+});
+
+const transactionHash = receipt.receipt.transactionHash;
 ```