Add sentence to readme about desc in input file issue

[mackenziesnyder]

Proposed changes

Describe the changes implemented in this pull request. If the changes fix a bug or resolves a feature request, be sure to link the issue. Please explain the issue and how the changes address the issue.

Add a sentence to known issues in the readme stating users must not have a 'desc' entity in their input files for #82

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionalitiy)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (if none of the other choices apply)

documentation addition

Checklist

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• Changes have been tested to ensure that fix is effective or that a feature works.
• Changes pass the unit tests
• Changes pass the wet run tests
• Code has been run through the poe quality task
• I have included necessary documentation or comments (as necessary)
• Any dependent changes have been merged and published

Notes

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[mackenziesnyder]

is this one good to merge @ataha24 ?