[Term Entry] Dart Maps .keys()

[codecademy-docs]

Reason/inspiration (optional)

"We would like a new term entry under Dart Maps for the Dart Map .keys() method. Provide the entry in a markdown file under docs/content/dart/concepts/map/terms/keys/keys.md

The entry should - Have an introductory paragraph about what the method is and does. - A syntax section with a pseudo code block with an explanation of it. - An example showing the method in use.

Please refer to the concept entry templates, content standards, and markdown style guide when working on the PR for this issue."

Entry Type (select all that apply)

New Term for Existing Concept Entry

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[PatrickOlaniyan]

@codecademy-docs I am interested in taking this issue on ?

[ishg-153]

@PatrickOlaniyan You're assigned!🎉You can look through the Contribution Guide to know more about contributing to Codecademy Docs. Check out the Content Standards and Style Guide, they’ll help you with creating your entry.

I see this is your first time contributing to Codecademy Docs. How did you find out about us?

[PatrickOlaniyan]

Yes this is my first time contributing. I found out about you guys through being a student on the Codeacdemy course.

[github-actions[bot]]

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