Update CHANGELOG.md

Author: jaeopt

CHANGELOG.md

@@ -6,8 +6,8 @@ June 2, 2021
 ### New Features
 * Fix to support multiple clients (sdkKeys). ([#401](https://github.com/optimizely/swift-sdk/pull/401), [#402](https://github.com/optimizely/swift-sdk/pull/402), [#405](https://github.com/optimizely/swift-sdk/pull/405), [#406](https://github.com/optimizely/swift-sdk/pull/406), [#407](https://github.com/optimizely/swift-sdk/pull/407), [#408](https://github.com/optimizely/swift-sdk/pull/408), [#409](https://github.com/optimizely/swift-sdk/pull/409), [#410](https://github.com/optimizely/swift-sdk/pull/410))
 
- - Full thread-safety for additional concurrency requirements
- - No resource conflicts for multiple sdkKeys support
+   - Full thread-safety for additional concurrency requirements
+   - No resource conflicts for multiple sdkKeys support
 
 ### Bug Fixes
 * BUILD\_LIBRARY\_FOR\_DISTRIBUTION is turned on to support ABI when clients build own binaries and share within the team. ([#403](https://github.com/optimizely/swift-sdk/pull/403))