fix broken link (#483)

Author: cctdaniel

pages/price-feeds/getting-started.mdx

@@ -16,7 +16,7 @@ Developers interested in using Pyth can refer to the following resources:
 
 In addition to the resources above, the following reference materials will be useful for developers as they integrate:
 
-- [Price Feed IDs](./price-feed-ids.mdx) lists the price feed IDs for all the assets supported by Pyth.
+- [Price Feed IDs](https://www.pyth.network/developers/price-feed-ids) lists the price feed IDs for all the assets supported by Pyth.
 - [Contract Addresses](./contract-addresses/) provides the contract addresses for Pyth on different chains.
 - [Error Codes](./error-codes.mdx) lists the error codes that can be returned by the Pyth contracts.
 - [Best Practices](./best-practices.mdx) explains how to use Pyth price feeds safely and effectively in your application.