* fix spelling error with examples/comminity/
* fix spelling error with tests/
* fix some spelling error with tests/ colossalai/ etc.
* fix spelling error with tests/ etc. date:2023.5.10
* [booster] fix no_sync method
* [booster] add test for ddp no_sync
* [booster] fix merge
* [booster] update unit test
* [booster] update unit test
* [booster] update unit test