docs: update staticRootPlugin README

[ozyx]

Closes #7005

Describe your changes:

Updates the StaticRootPlugin README to be accurate

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• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Is this change backwards compatible? For example, developers won't need to change how they are calling the API or how they've extended core plugins such as Tables or Plots.

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
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[deploysentinel]

Current Playwright Test Results Summary

✅ 136 Passing - ⚠️ 3 Flaky

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 08/29/2023 08:59:53pm UTC)

Run Details

Running Job e2e-stable on CircleCI

Commit: 4a7f4d8

Started: 08/29/2023 08:53:08pm UTC

⚠️ Flakes

📄   functional/plugins/plot/logPlot.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Log plot tests Log Plot ticks are functionally correct in regular and log mode and after refresh Retry 1 • Initial Attempt	1.54% (1) 1 / 65 run failed over last 7 days	27.69% (18) 18 / 65 runs flaked over last 7 days

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📄   functional/plugins/notebook/restrictedNotebook.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Restricted Notebook with a page locked and with an embed @addinit Disallows embeds to be deleted if page locked @addinit Retry 1 • Initial Attempt	0% (0) 0 / 61 runs failed over last 7 days	44.26% (27) 27 / 61 runs flaked over last 7 days

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📄   functional/planning/timelist.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Time List Create a Time List, add a single Plan to it and verify all the activities are displayed with no milliseconds Retry 1 • Initial Attempt	0% (0) 0 / 94 runs failed over last 7 days	52.13% (49) 49 / 94 runs flaked over last 7 days

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View Detailed Build Results

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Current Playwright Test Results Summary

✅ 14 Passing

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 08/29/2023 08:59:53pm UTC)

Run Details

Running Workflow e2e-couchdb on Github Actions

Commit: 4a7f4d8

Started: 08/29/2023 08:28:29pm UTC

View Detailed Build Results

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[scottbell]

LGTM!