Update about.md Keys for map can be of any type in access beh.

[PrzemekRychter]

https://hexdocs.pm/elixir/Access.html

"Access supports keyword lists (Keyword) and maps (Map) out of the box. Keywords supports only atoms keys, keys for maps can be of any type. Both return nil if the key does not exist:"

[github-actions]

Thank you for contributing to exercism/elixir 💜 🎉. This is an automated PR comment 🤖 for the maintainers of this repository that helps with the PR review process. You can safely ignore it and wait for a maintainer to review your changes.

Based on the files changed in this PR, it would be good to pay attention to the following details when reviewing the PR:

• General steps

  • 🏆 Does this PR need to receive a label with a reputation modifier (x:size/{tiny,small,medium,large,massive})? (A medium reputation amount is awarded by default, see docs)

• Concept changed

  • 👤 Does the author of the PR need to be added as an author or contributor in <concept>/.meta/config.json (see docs)?
  • 📖 Does the concept introduction provide all necessary information to solve this exercise?

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Automated comment created by PR Commenter 🤖.

[angelikatyborska]

Thank you! You're right of course 🙂