Document step to create a branch and PR when releasing

[mfisher87]

Pull Request (PR) draft checklist - click to expand

• Please review our
  contributing documentation
  before getting started.
• Populate a descriptive title. For example, instead of "Updated README.md", use a
  title such as "Add testing details to the contributor section of the README".
  Example PRs: #763
• Populate the body of the pull request with:
  • A clear description of the change you are proposing.
  • Links to any issues resolved by this PR with text in the PR description, for
    example closes #1. See
    GitHub docs - Linking a pull request to an issue.
• Update CHANGELOG.md with details about your change in a section titled
  ## Unreleased. If such a section does not exist, please create one. Follow
  Common Changelog for your additions.
  Example PRs: #763
• Update the documentation and/or the README.md with details of changes to the
  earthaccess interface, if any. Consider new environment variables, function names,
  decorators, etc.

Click the "Ready for review" button at the bottom of the "Conversation" tab in GitHub
once these requirements are fulfilled. Don't worry if you see any test failures in
GitHub at this point!

Pull Request (PR) merge checklist - click to expand

Please do your best to complete these requirements! If you need help with any of these
requirements, you can ping the @nsidc/earthaccess-support team in a comment and we
will help you out!

• Add unit tests for any new features.
• Apply formatting and linting autofixes. You can add a GitHub comment in this Pull
  Request containing "pre-commit.ci autofix" to automate this.
• Ensure all automated PR checks (seen at the bottom of the "conversation" tab) pass.
• Get at least one approving review.

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📚 Documentation preview 📚: https://earthaccess--950.org.readthedocs.build/en/950/

[github-actions]

👈 Launch a binder notebook on this branch for commit 8e025d7

I will automatically update this comment whenever this PR is modified

👈 Launch a binder notebook on this branch for commit dd11c8a

👈 Launch a binder notebook on this branch for commit f4a4c61

👈 Launch a binder notebook on this branch for commit 577d439

[mfisher87]

I'm going to count this approval as still valid since my only change was to fix a formatting mistake.

Naughty-merge!