Fix CHANGELOG.md to reference correct PR number

The changelog entry for idempotent locale generation incorrectly
referenced PR 2092. Updated to correctly reference PR 2090, which
contains the actual implementation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

CHANGELOG.md

@@ -25,7 +25,7 @@ Changes since the last non-beta release.
 
 #### Improved
 
-- **Idempotent Locale Generation**: The `react_on_rails:locale` rake task is now idempotent, automatically skipping generation when locale files are already up-to-date. This makes it safe to call multiple times (e.g., in Shakapacker's `precompile_hook`) without duplicate work. Added `force=true` option to override timestamp checking. [PR 2092](https://github.com/shakacode/react_on_rails/pull/2092) by [justin808](https://github.com/justin808).
+- **Idempotent Locale Generation**: The `react_on_rails:locale` rake task is now idempotent, automatically skipping generation when locale files are already up-to-date. This makes it safe to call multiple times (e.g., in Shakapacker's `precompile_hook`) without duplicate work. Added `force=true` option to override timestamp checking. [PR 2090](https://github.com/shakacode/react_on_rails/pull/2090) by [justin808](https://github.com/justin808).
 
 ### [v16.2.0.beta.12] - 2025-11-20