Update 37-control-plane.md

[headw01]

Update the http paths.

Thanks for contributing to ContainerPilot! Please include with your pull request:

• A description of what you did for the changelog
• An explanation of why ContainerPilot needs this change
• How to verify that it works (most PRs need tests!)
• A link to the GitHub issue that it addresses

If you're contributing a new feature, it's usually better to open an issue to discuss the feature rather than open a pull request unless the feature is trivial.