💅🏽 Add Example in Address Param (#65)

Just so things are pretty...

<img width="990" height="326" alt="Screenshot 2025-09-19 at 15 01 34"
src="https://github.com/user-attachments/assets/4b84b17b-b490-46c5-a853-98141df29e36"
/>

Author: bh2smith

packages/agent-sdk/src/openai/params.ts

@@ -13,6 +13,7 @@ export const addressParam = {
   required: true,
   description: "20 byte Ethereum address with 0x prefix",
   schema: { type: "string" },
+  example: "0x6810e776880c02933d47db1b9fc05908e5386b96",
 };
 
 export const addressOrSymbolParam = {