fix-server: remove the '\r' character in wait-for-it.sh to fix issue#21

[JokinYang]

Pull Request Checklist

Please ensure that your pull request meets the following criteria:

• [x] The code changes are properly tested.
• [x] Any new features or changes are documented in the README.
• [x] The code follows the project's coding guidelines.
• [x] All existing tests pass successfully.
• [x] The commit messages are clear and descriptive.

Description

remove the '\r' character in wait-for-it.sh to fix issue#21

Related Issues

issue#21

Additional Notes

none

[codeacme17]

Thanks for your pr, I will review it later