docs(i18n): sync max_tokens configuration docs to ja, ru, zh

[wu21-web]

Description

This PR syncs the docs about max_tokens configurations from en to ja,ru, and zh-CN.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Refactoring (no functional changes)
• Documentation update
• CI / Build / Tooling

How Has This Been Tested?

• make test passes locally
• Manual testing (describe below)

Checklist

• My code follows the project's coding style (go fmt, go vet)
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or my feature works
• New and existing unit tests pass locally with my changes
• I have updated the documentation accordingly (if applicable)
• I have signed the CLA

Related Issues

closes #763

[github-actions]

✅ OpenCodeReview: Review skipped: no items were selected.

[wu21-web]

Seems like a duplicate of #766 , closing if #766 gets merged.