docs: update link to @stacks/rpc-client (#2216)

Author: friedger

client/MIGRATION.md

@@ -5,7 +5,7 @@
 This library is now generated with [openapi-typescript](https://openapi-ts.dev/openapi-fetch/) rather than [swagger-codegen](https://github.com/swagger-api/swagger-codegen). Several types which previously presented as the `any` type are now fixed, and the `@stacks/stacks-blockchain-api-types` package is no longer needed.
 
 
-This repo no longer includes a schema for the Stacks Blockchain RPC interface. An alternative client library for the RPC interface can be found at https://github.com/hirosystems/stacks.js/pull/1737.
+This repo no longer includes a schema for the Stacks Blockchain RPC interface. An alternative client library for the RPC interface can be found at [@stacks/rpc-client](https://github.com/hirosystems/stacks-rpc-client).
 
 #### Configuration & Middleware