broken link in read me on examples/travel_app

_↴ Ported from [flutter/genui#783](https://github.com/flutter/genui/issues/783) — originally opened by [shehrozeee](https://github.com/shehrozeee) on 2026-03-03._
_Original labels: P1, front-line-handled_

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**Describe the bug**
broken link in read me on examples/travel_app prevents people form testing the example

**To Reproduce**
Steps to reproduce the behavior:
1. Go to https://github.com/flutter/genui/tree/main/examples/travel_app
2. Click on https://github.com/flutter/genui/blob/main/docs/run_app_with_gemini_key.md (its linked there)
3. See error (404)

**Expected behavior**
the md file with instructions is shown instead of the 404

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### 1 comment(s) from the original issue

**[omarfarouk228](https://github.com/omarfarouk228)** commented on 2026-04-03:

I'm working on this. The file was moved to docs/usage/ — fixing the broken links in travel_app and simple_chat READMEs.

The broken link is in the README at examples/travel_app. The correct file is now at docs/usage/run_app_with_gemini_key.md. Update the link in that README and also check examples/simple_chat README as mentioned in the comment. Verify by navigating to the updated path in the repository.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.