[Documentation] Broken links in spring-ai-bedrock README.md

Hi Spring AI team! 👋

I've been using Spring AI extensively, and it's been incredibly helpful - thank you for all the great work!
I noticed a small issue with the documentation that I'd love to help fix:

Bug description
Several documentation links in the models/spring-ai-bedrock/README.md file are returning 404 errors when clicked. These links appear to point to Spring AI documentation pages that may have been moved, renamed, or deprecated.

Environment

• Repository: spring-projects/spring-ai (main branch)
• File: models/spring-ai-bedrock/README.md

Steps to reproduce

1. Navigate to https://github.com/spring-projects/spring-ai/blob/main/models/spring-ai-bedrock/README.md
2. Click on various documentation links throughout the README
3. Observe that several links redirect to 404 error pages on the Spring AI documentation site

Expected behavior
All documentation links in the README should redirect to valid, accessible pages in the current Spring AI documentation.

Minimal Complete Reproducible example
This is a documentation issue that can be reproduced by simply clicking the broken links in the README file. No code execution or setup is required - the issue is immediately visible when following the links from the GitHub README page.

Additional Context
I'm happy to submit a PR to fix these broken links by reviewing each link against the current Spring AI documentation and updating URLs that have moved to new locations.

Open models/spring-ai-bedrock/README.md and review each documentation link against the current Spring AI documentation site. Confirm which links return 404, update the affected URLs, and verify that every documentation link resolves to an accessible page.