Update README to make current

[wesley-dean-gsa]

Changes proposed in this pull request

This updates the README documentation to show how to interact with the site while removing the Netlify references.

security considerations

None. Just a documentation change.

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

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✅ MARKDOWN	markdown-table-formatter	20	0	0	0.38s
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✅ REPOSITORY	trivy	yes		no	8.82s
✅ REPOSITORY	trivy-sbom	yes		no	1.6s
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✅ YAML	yamllint	14		0	0.51s

See detailed report in MegaLinter reports

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[github-actions]

Pa11y testing results

``` Welcome to Pa11y

Running Pa11y on URL https://federalist-a2423046-fe43-4e75-a2ef-2651e5e123ca.sites.pages.cloud.gov/preview/gsa-tts/tts.gsa.gov//update_readme/

Results for URL: https://federalist-a2423046-fe43-4e75-a2ef-2651e5e123ca.sites.pages.cloud.gov/preview/gsa-tts/tts.gsa.gov//update_readme/

• Error: This element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 3.68:1. Recommendation: change background to #63686c.
├── WCAG2AA.Principle1.Guideline1_4.1_4_3.G18.Fail
├── #main-content > section:nth-child(3) > div > div > div:nth-child(2) > p
└──

For over 50 years, GSA has been...

1 Errors

[debjudy]

Approved 👍

[github-actions]

Pa11y testing results

``` Welcome to Pa11y

Running Pa11y on URL https://federalist-a2423046-fe43-4e75-a2ef-2651e5e123ca.sites.pages.cloud.gov/preview/gsa-tts/tts.gsa.gov//update_readme/

Error: TimeoutError: Timed out after 30000 ms while waiting for the WS endpoint URL to appear in stdout!
at ChromeLauncher.launch (/home/runner/work/tts.gsa.gov/tts.gsa.gov/node_modules/puppeteer-core/lib/cjs/puppeteer/node/ProductLauncher.js:147:23)
at async setBrowser (/home/runner/work/tts.gsa.gov/tts.gsa.gov/node_modules/pa11y/lib/pa11y.js:132:19)
at async runPa11yTest (/home/runner/work/tts.gsa.gov/tts.gsa.gov/node_modules/pa11y/lib/pa11y.js:64:2)
at async pa11y (/home/runner/work/tts.gsa.gov/tts.gsa.gov/node_modules/pa11y/lib/pa11y.js:35:18)
at async runProgram (/home/runner/work/tts.gsa.gov/tts.gsa.gov/node_modules/pa11y/bin/pa11y.js:135:19)