docs: wrong command in structured_outputs README

[yihong0618]

Purpose

as diff
before this patch

➜ vllm git:(main) vim examples/online_serving/structured_outputs/README.md
➜ vllm git:(main) uvx --from git+https://github.com/vllm-project/vllm#subdirectory=examples/online_serving/structured_outputs
structured-output
Updated https://github.com/vllm-project/vllm (41f3884)
Built examples-online-structured-outputs @ git+https://github.com/vllm-project/vllm@41f3884438c082c4cc2250eb800b8586e1a103d8#subdirectory=examples/o
Installed 17 packages in 25ms
An executable named structured-output is not provided by package examples-online-structured-outputs.
The following executables are available:

• structured-outputs

Test Plan

Test Result

---

Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

[mergify]

Documentation preview: https://vllm--26677.org.readthedocs.build/en/26677/

[gemini-code-assist]

Code Review

This pull request corrects a typo in a command within the structured_outputs example's README file. The command incorrectly referred to the executable as structured-output instead of the correct structured-outputs. The change is accurate and fixes the issue, allowing users to run the example command successfully. The change is well-contained and I have no further feedback.

[DarkLight1337]

Good catch