Update Copilot CLI trust prompt documentation

[ashis-baral]

Why:

Fix: #46072

What's being changed (if available, include any code snippets, screenshots, or gifs):

Updated the Copilot CLI documentation to accurately reflect the current trust prompt shown when starting Copilot CLI in a folder.

The documentation previously described three options:

• Yes, proceed
• Yes, and remember this folder for future sessions
• No, exit (Esc)

The current Copilot CLI displays three options are:

• Yes
• Yes, and remember this folder for future sessions
• No (Esc)

This change updates the documentation to match the current CLI behavior.

Check off the following:

• A subject matter expert (SME) has reviewed the technical accuracy of the content in this PR. In most cases, the author can be the SME. Open source contributions may require an SME review from GitHub staff.
• The changes in this PR meet the docs fundamentals that are required for all content.
• All CI checks are passing and the changes look good in the review environment.

[github-actions]

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Table of review links

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The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on a staging server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
copilot/how-tos/copilot-cli/use-copilot-cli/overview.md	fpt ghec	fpt ghec

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

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[subatoi]

Many thanks, @ashis-baral, confirmed—I'll get this merged now

[github-actions]

Thanks very much for contributing! Your pull request has been merged 🎉 You should see your changes appear on the site in approximately 24 hours. If you're looking for your next contribution, check out our help wanted issues ⚡

[ashis-baral]

@subatoi You’re welcome! 😊