fix: ENT-145: add us gov issuer

[Ramon Petgrave (ramonpetgrave64)]

Overview

https://linear.app/langchain/issue/ENT-145/add-us-tld-to-default-entra-id-overrides

Adds the .us TLD for Azure Entry overrides, as well as the china and global endpoints

Type of change

Type: Update existing documentation

Related issues/PRs

• GitHub issue: N/A
• Feature PR: https://github.com/langchain-ai/langchainplus/pull/12762

• Linear issue: ENT-145/add-us-tld-to-default-entra-id-overrides
• Slack thread: https://langchain.slack.com/archives/C08R92KKUJH/p1759433050576189

Checklist

• I have read the contributing guidelines
• I have tested my changes locally using docs dev
• All code examples have been tested and work correctly
• I have used root relative paths for internal links
• I have updated navigation in src/docs.json if needed
• I have gotten approval from the relevant reviewers
• (Internal team members only / optional) I have created a preview deployment using the Create Preview Branch workflow

Additional notes

[github-actions]

Preview ID generated: preview-ramonE-1759936593-de6b16d