Add callout to Pythnet addresses page to clarify target chain usage

Co-Authored-By: Tejas Badadare <[email protected]>

Author: devin-ai-integration[bot]

pages/price-feeds/contract-addresses/pythnet.mdx

@@ -1,5 +1,11 @@
 # Price Feed Program Addresses on Pythnet
 
+import { Callout } from "nextra/components";
+
+<Callout type="warning" emoji="⚠️">
+  **Important:** The addresses on this page are for the Pythnet network itself, which is used to construct and deliver Pyth prices to other blockchains. If you are building an application on EVM, Solana, SVM (like Sonic), or another chain, you likely want to use the Pyth program deployed on your target chain instead. Please refer to the [Contract Addresses](/price-feeds/contract-addresses) page and select your specific blockchain environment.
+</Callout>
+
 The following table contains the addresses of the programs deployed on Pythnet that operate together to construct Pyth prices and deliver them to other blockchains:
 
 | Network  | Program                                                                                                 | Program address                                |