Fix: Remove trailing whitespace from "updated_at " to make it "updated_at"

Fixes #107

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
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• I have updated my branch with the main branch
• [N] I have added tests that prove my fix is effective or that my feature works
• [ N I have added the necessary documentation about the functionality in the appropriate .md file
• [N] I have added inline documentation to the code I modified

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