Remove trailing whitespaces

[zhongyi-zhang]

Resubmit a PR to cover #2.

[cfdreddbot]

Hey zhongyi-zhang!

Thanks for submitting this pull request! I'm here to inform the recipients of the pull request that you and the commit authors have already signed the CLA.

[zhongyi-zhang]

@mattmcneeney could you take a look at the "Invalid .pullapprove.yml" issue? Seems pullapprove.com doesn't reflect the latest change in .pullapprove.yml.

[mattmcneeney]

@zhongyi-zhang I've found the problem - @leonwanghui was not a collaborator of this repo. I've fixed this, so once @leonwanghui has accepted the invite, I'll get pullapprove to try again.

[leonwanghui]

Thanks @mattmcneeney
Hi @zhongyi-zhang I have accepted the invitation, please reopen this PR to see if it works.

[cfdreddbot]

Hey zhongyi-zhang!

Thanks for submitting this pull request! I'm here to inform the recipients of the pull request that you and the commit authors have already signed the CLA.

[zhongyi-zhang]

It seems reopening doesn't work. I'll try creating a new one.

[zhongyi-zhang]

The new PR #53 doesn't work, either...

[mattmcneeney]

@zhongyi-zhang I had to restart pullapprove again. All working now I think! cc @leonwanghui