Update Changelog.md for #2680

Author: JonRowe

Changelog.md

@@ -10,6 +10,7 @@ Bug Fixes:
 
 * Set `ActiveStorage::FixtureSet.file_fixture_path` when including file fixture support.
   (Jason Yates, #2671)
+* Allow `broadcast_to` matcher to take Symbols. (@Vagab, #2680)
 
 ### 6.0.2 / 2023-05-04
 [Full Changelog](https://github.com/rspec/rspec-rails/compare/v6.0.1...v6.0.2)