Update Utilities page design to align with designer feedback

[dabhattimsft]

Summary of the pull request

This PR updates design of utilities page to remove the split button and add a toggle for admin launch. This change also updates descriptions to strings written by the content writer and links to go links instead of aka.ms.

References and relevant issues

Detailed description of the pull request / Additional comments

Validation steps performed

Manually validated

PR checklist

• [ ] Closes #xxx
• [ ] Tests added/passed
• [ ] Documentation updated