updates last edit dates to reflect latest changes from git blame

[david-saeger]

Thanks for submitting a pull request! Below are a few things you can do to help us more quickly review your changes.

Checklist

I have…

• run the application locally (./scripts/serve) and verified that my changes behave as expected.
• run the build process locally (./scripts/build) and make sure it builds correctly.
• run the test suite (./scripts/test) and verified that all tests pass.
• summarized below my changes and noted which issues (if any) this pull request fixes or addresses.
• thoroughly outlined below the steps necessary to test my changes.
• attached screenshots illustrating relevant behavior before and after my changes.
• read, understand, and agree to the terms described in CONTRIBUTING.md.
• added my name, email address, and copyright date to CONTRIBUTORS.md.

Summary of Changes

This pull request…

• Updates edit dates of articles to reflect most recent edit from git blame