update changelog

CHANGELOG.md

@@ -8,5 +8,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - [docs] Added changelog in PR [#1230](https://github.com/Microsoft/BotFramework-Emulator/pull/1230)
 - [style] 💅 Integrated prettier and eslint in PR [#1240](https://github.com/Microsoft/BotFramework-Emulator/pull/1240)
-- [feat] Added app-wide instrumentation in PR [#1251](https://github.com/Microsoft/BotFramework-Emulator/pull/1251)
-- [fix] Fixed issue [(#1257)](https://github.com/Microsoft/BotFramework-Emulator/issues/1257) where opening transcripts via the command line was crashing the app, in PR [#1269](https://github.com/Microsoft/BotFramework-Emulator/pull/1269).
+- [main / client] Added app-wide instrumentation in PR [#1251](https://github.com/Microsoft/BotFramework-Emulator/pull/1251)
+
+## Fixed
+- [main] Fixed issue [(#1257)](https://github.com/Microsoft/BotFramework-Emulator/issues/1257) where opening transcripts via the command line was crashing the app, in PR [#1269](https://github.com/Microsoft/BotFramework-Emulator/pull/1269).
+- [main] display correct selected theme in file menu on mac, in PR #1280.