Fix broken links

[emyl3]

Related Issue or Background Info

• Noticed this failing link checker run
• Two links were broken:
  • https://www.hhs.gov/coronavirus/testing/covid-19-diagnostic-data-reporting/index.html
  • https://www.hhs.gov/sites/default/files/covid-19-laboratory-data-reporting-guidance.pdf

Changes Proposed

• Changed both links to
  https://www.cdc.gov/covid/php/lab/reporting-lab-data.html

Additional Information

⚠️ Couldn't find an appropriate link to the guidance pdf so I just changed it to the landing page ⚠️
Jayna has approved the updated links

Screenshots / Demos

Checklist for Author and Reviewer

Deployed on dev3

Design

• Any UI/UX changes have a designer as a reviewer, and changes have been approved
• Any large-scale changes have been deployed to test, dev, or pentest and smoke-tested by both the engineering and design teams

Content

• Any content changes (including new error messages) have been approved by content team

Support

• Any changes that might generate new support requests have been flagged to the support team

Testing

• Includes a summary of what a code reviewer should verify

[jayna-SkylightDigital]

@emyl3 setting the links to https://www.cdc.gov/covid/php/lab/reporting-lab-data.html is fine -- I checked too and wasn't able to find an equivalent link for the PDF guidance. Thanks!