Update SpS Tutorial (#773)

Author: enoldev

website/pages/en/sps/introduction.mdx

@@ -14,6 +14,6 @@ It is really a matter of where you put your logic, in the subgraph or the Substr
 
 Visit the following links for How-To Guides on using code-generation tooling to build your first end-to-end project quickly:
 
-- [Solana](https://substreams.streamingfast.io/documentation/how-to-guides/intro-your-first-application/solana)
-- [EVM](https://substreams.streamingfast.io/documentation/how-to-guides/intro-your-first-application/evm)
-- [Injective](https://substreams.streamingfast.io/documentation/how-to-guides/intro-your-first-application/injective)
+- [Solana](https://substreams.streamingfast.io/documentation/how-to-guides/solana)
+- [EVM](https://substreams.streamingfast.io/documentation/how-to-guides/evm)
+- [Injective](https://substreams.streamingfast.io/documentation/how-to-guides/injective)

website/pages/en/sps/triggers-example.mdx

@@ -87,17 +87,7 @@ type MyTransfer @entity {
 
 This schema defines a `MyTransfer` entity with fields such as `id`, `amount`, `source`, `designation`, and `signers`.
 
-## Step 4: Generate Protobuf Files
-
-To generate Protobuf objects in AssemblyScript, run the following command:
-
-```bash
-npm run protogen
-```
-
-This command converts the Protobuf definitions into AssemblyScript, allowing you to use them in the subgraph's handler.
-
-## Step 5: Handle Substreams Data in `mappings.ts`
+## Step 4: Handle Substreams Data in `mappings.ts`
 
 With the Protobuf objects generated, you can now handle the decoded Substreams data in your `mappings.ts` file found in the `./src` directory. The example below demonstrates how to extract to subgraph entities the non-derived transfers associated to the Orca account id:
 
@@ -120,7 +110,7 @@ export function handleTriggers(bytes: Uint8Array): void {
       entity.designation = event.transfer!.accounts!.destination
 
       if (event.transfer!.accounts!.signer!.single != null) {
-        entity.signers = [event.transfer!.accounts!.signer!.single.signer]
+        entity.signers = [event.transfer!.accounts!.signer!.single!.signer]
       } else if (event.transfer!.accounts!.signer!.multisig != null) {
         entity.signers = event.transfer!.accounts!.signer!.multisig!.signers
       }
@@ -130,6 +120,16 @@ export function handleTriggers(bytes: Uint8Array): void {
 }
 ```
 
+## Step 5: Generate Protobuf Files
+
+To generate Protobuf objects in AssemblyScript, run the following command:
+
+```bash
+npm run protogen
+```
+
+This command converts the Protobuf definitions into AssemblyScript, allowing you to use them in the subgraph's handler.
+
 ## Conclusion
 
 You’ve successfully set up a trigger-based Substreams-powered subgraph for a Solana SPL token. You can now further customize your schema, mappings, and modules to suit your specific use case.