Add missing release notes link

Author: eddeee888

website/src/pages/docs/migration/operations-and-client-preset-from-5-0.mdx

@@ -27,7 +27,8 @@ config to improve developer experience.
 
 For the most important changes, read the [Breaking changes](#breaking-changes) section.
 
-For a full list of changes, see the CHANGELOG.
+For a full list of changes, see the
+[release notes](https://github.com/dotansimha/graphql-code-generator/releases/tag/release-1777556900878).
 
 ## Installation