fix: remove redundant -p flag from SGLang docker run command

[Copilot]

--network=host makes -p 8000:8000 a no-op, and the server launches on --port 8080 anyway — the flag was both redundant and pointed at the wrong port.

What does this PR do?

Removes -p 8000:8000 from the SGLang docker run command in the Llama3.1-8B example. With --network=host already set, port publishing flags are ignored by Docker. The flag also referenced port 8000 while the server starts on 8080, which would have misled users troubleshooting connectivity.

Type of change

• Bug fix
• Documentation update
• New feature
• Refactor/cleanup

Related issues

Testing

• Tests added/updated
• All tests pass locally
• Manual testing completed

Checklist

• Code follows project style
• Pre-commit hooks pass
• Documentation updated (if needed)

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[github-actions]

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