docs: update connector documentation style

[mindymo]

Summary

• Updated phrasing from "That's it!" to "Done." for step completion markers
• Updated app name reference from "C1 Slack app" to "C1 app for Slack"
• Reordered cloud-hosted token fields (Pro first, then Business+) and updated GovSlack checkbox label
• Added trailing newline to end of file

[github-actions]

Connector PR Review: docs: update connector documentation style

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Review Summary

Documentation-only change to docs/connector.mdx. Updates phrasing ("That's it!" → "Done."), renames "C1 Slack app" to "C1 app for Slack", reorders cloud-hosted configuration steps to list Pro token before Business+ token, updates the GovSlack checkbox label, and adds a trailing newline. No code, dependency, or configuration changes. No issues found.

Security Issues

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Correctness Issues

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Suggestions

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[github-actions]

No blocking issues found.