docs: broken jsonpath in quick-start.md "Verify Kmesh Service Logs" command

[A-d-i-t-y]

Problem:
In the Quick Start guide (docs/setup/quick-start.md), under "4. Verify Kmesh Service Logs", the command is:

kubectl logs -n kmesh-system $(kubectl get pods -n kmesh-system -o jsonpath='{.items.metadata.name}')

.items is a JSON array (kubectl get pods returns multiple pods), so .items.metadata.name is invalid jsonpath syntax without an index or wildcard. Running this command as written returns empty output or an error, so this step fails for anyone following the quick-start guide verbatim.

Expected fix:
Should be either:

kubectl logs -n kmesh-system $(kubectl get pods -n kmesh-system -o jsonpath='{.items[0].metadata.name}')

(for the first pod) or use a label selector to target the Kmesh pod specifically.

Additional context:
I'd like to work on this - happy to submit a PR with the fix.

[A-d-i-t-y]

@itvi-1234 @yashisrani Hi maintainers, I came across this while going through the Quick Start guide as part of preparing for the LFX Mentorship program. I'd like to pick this up and submit a fix.

I'll update the jsonpath to {.items[0].metadata.name} (or switch to a label-selector based approach if that's preferred for targeting the Kmesh pod specifically) and verify the corrected command works as expected before opening the PR.

/assign