Update README.md

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PULL REQUEST

Purpose and Content

(Clearly and concisely state the purpose of this PR)

Benefits and Risks

(State concisely the benefits to be derived from and the risks associated with this PR)

Linked Issues

(Provide references to any link issues. Use closes #issuenum to automatically close an open issue)

• Fixes #
• Closes #

PR Checklist

• This PR has a corresponding issue OR is linked to an SDI.
• I have followed CliMA's codebase contribution and style guidelines OR N/A.
• I have followed CliMA's documentation policy.
• I have checked all issues and PRs and I certify that this PR does not duplicate an open PR.
• Unit tests are included OR N/A.
• Code used in an integration test OR N/A.
• All tests ran successfully on my local machine OR N/A.
• All classes, modules, and function contain appropriate docstrings OR N/A.
• Documentation has been added/updated OR N/A.

[odunbar]

bors r+

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