Fix Overly permissive regular expression range in conda_package_helpe…

[mathbunnyru]

…r.py

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Checklist (especially for first-time contributors)

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests
• I will try not to use force-push to make the review process easier for reviewers
• I have updated the documentation for significant changes