docs(openai): note OpenAI client base_url for multi-model gateways

[seven7763]

Summary

The OpenAI frontend README already shows the OpenAI Python client via base_url.

This PR adds a short tip that the same client pattern works with OpenAI-compatible multi-model gateways when not running the Triton OpenAI frontend locally, using DaoXE (https://api.daoxe.com/v1) as one concrete example.

Docs only — no runtime behavior changes.

Test plan

• README tip renders
• Local Triton client example unchanged
• Tip is clearly optional

Co-Authored-By: Claude Fable 5 noreply@anthropic.com

[greptile-apps]

Greptile Summary

Adds an optional README note explaining that the OpenAI client’s base_url pattern can target OpenAI-compatible multi-model gateways.

• Provides DaoXE and its /v1 endpoint as a concrete example.
• Leaves the existing local Triton client example unchanged.

Confidence Score: 5/5

The documentation-only change appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
python/openai/README.md	Adds a concise optional gateway example without changing runtime code or the existing local setup instructions.

_{Reviews (2): Last reviewed commit: "docs: note OpenAI client base_url for mu..." | Re-trigger Greptile}