Fix broken links to deprecated bedrock-vertex-proxies documentation page

GitHub Issue: Fix broken links to deprecated bedrock-vertex-proxies documentation page

Description

The Claude Code documentation contains broken links pointing to
/en/docs/claude-code/bedrock-vertex-proxies, which has been merged into
/en/docs/claude-code/third-party-integrations. The old URL returns HTTP 500 errors when accessing the .md
endpoint, though the HTML version correctly redirects.

Affected Pages

Three documentation pages contain links to the deprecated URL:

1. Settings page (/en/docs/claude-code/settings)

• Line 164 in the environment variables table
• Link: /en/docs/claude-code/bedrock-vertex-proxies#model-configuration

1. LLM Gateway page (/en/docs/claude-code/llm-gateway)

• Line 141 in the main content
• Link: /en/docs/claude-code/bedrock-vertex-proxies#model-configuration

1. Costs page (/en/docs/claude-code/costs)

• Line 28 in the Bedrock/Vertex section
• Link: /en/docs/claude-code/bedrock-vertex-proxies#litellm

Current Behavior

• Accessing https://docs.anthropic.com/en/docs/claude-code/bedrock-vertex-proxies.md returns HTTP 500
• The HTML version redirects to third-party-integrations, but the .md endpoint doesn't handle the redirect

properly

• This causes issues for documentation scrapers and potentially other automated tools

Expected Behavior

• All links should point directly to the current location: /en/docs/claude-code/third-party-integrations
• The old URL should properly redirect at both HTML and .md endpoints

Suggested Fix

Replace the deprecated URLs in the documentation source:

• /en/docs/claude-code/bedrock-vertex-proxies#model-configuration →

/en/docs/claude-code/third-party-integrations#model-configuration

• /en/docs/claude-code/bedrock-vertex-proxies#litellm →

/en/docs/claude-code/third-party-integrations#litellm

Additional Context

Discovered while using an automated documentation scraper that fetches .md versions directly. The scraper
had to implement a fallback mechanism to handle this edge case, but fixing it at the source would improve
reliability and performance.

Steps to Reproduce

1. Visit https://docs.anthropic.com/en/docs/claude-code/bedrock-vertex-proxies.md (returns 500)
2. Visit https://docs.anthropic.com/en/docs/claude-code/bedrock-vertex-proxies (redirects to

third-party-integrations)

1. Check the three affected pages listed above for the broken links