Docs: update readme startup

[hetd54]

add documentation on accessing the cms in developer mode, update outdated links to Quinetucket

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[github-actions]

Note: This comment gets updated with every commit

Git SHA: 62576c09bae495694b6153f2a965f7965a67ea5d

Site: default-site

Pa11y test status: PASS

 {
    "total": 12,
    "passes": 12,
    "errors": 0,
    "results": {
        "http://localhost:9000/project/improve-statewide-project-communication/": [],
        "http://localhost:9000/project/test-four/": [],
        "http://localhost:9000/project/test-one/": [],
        "http://localhost:9000/project/test-three/": [],
        "http://localhost:9000/project/test-two/": [],
        "http://localhost:9000/": [],
        "http://localhost:9000/completed/": [],
        "http://localhost:9000/ongoing/": [],
        "http://localhost:9000/search/": [],
        "http://localhost:9000/about/": [],
        "http://localhost:9000/contact/": [],
        "http://localhost:9000/contact/thank-you/": []
    }
}
 

[hollandjg]

Looks good to me!