[Doc Improvement] Obsolete content updates -1

[SirajShaik-MSFT]

This PR consists of revamping the repo by finding the outdated content in the docs like obsolete SDKs, tools etc.
Analyzed two documents:

• https://learn.microsoft.com/en-us/microsoftteams/platform/agents-in-teams/overview
• https://learn.microsoft.com/en-us/microsoftteams/platform/bots/bot-concepts?tabs=typescript

Preview URL

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit d5d44e8:

✅ Validation status: passed

File	Status	Preview URL	Details
msteams-platform/agents-in-teams/overview.md	✅Succeeded	View

For more details, please refer to the build report.

[SirajShaik-MSFT]

Nick Walker (@nickwalkmsft), regarding this document https://learn.microsoft.com/en-us/microsoftteams/platform/bots/bot-concepts?tabs=typescript, the page is now positioned in the TOC as agent content, but its live URL still uses the legacy bot-era slug /bots/bot-concepts. This probably won’t block readers, but it does create a noticeable terminology mismatch between navigation, page content, and URL. I think it’s worth cleaning up as part of the revamp, provided we handle redirects and update inbound links rather than changing the slug in isolation.