message: chore: update documentation for frontend feature flags
diff: @@ -597,7 +597,7 @@ FEATURE_FLAGS = {
  }
  ```
  -If you want to use the same flag in the client code, also add it to the FeatureFlag TypeScript enum in `superset-frontend/src/featureFlags.ts`. For example,
  +If you want to use the same flag in the client code, also add it to the FeatureFlag TypeScript enum in [@superset-ui/core](https://github.com/apache-superset/superset-ui/blob/master/packages/superset-ui-core/src/utils/featureFlags.ts). For example,
  ```typescript
  export enum FeatureFlag {
  