This is a documentation-only change and does not impact any functionality of the framework.

Comment From: pivotal-cla

@hunhee98 Please sign the Contributor License Agreement!

Click here to manually synchronize the status of this Pull Request.

See the FAQ for frequently asked questions.

Comment From: pivotal-cla

@hunhee98 Thank you for signing the Contributor License Agreement!

Comment From: snicoll

@hunhee98 thanks. I am not a native speaker but I think "historic reasons" is valid. However, "historical reasons" being used in the vast majority of the code base, it's still worth harmonizing.