Fix pulsar doc misnamed variable, replace enableRetry with retryEnable

[emilesalem]

Fixes #40513

[quarkus-bot]

Thanks for your pull request!

The title of your pull request does not follow our editorial rules. Could you have a look?

• title should preferably start with an uppercase character (if it makes sense!)
• title should not start with chore/docs/feat/fix/refactor but be a proper sentence

_{This message is automatically generated by a bot.}

[github-actions]

🙈 The PR is closed and the preview is expired.

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 10b941c.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

⚠️ There are other workflow runs running, you probably need to wait for their status before merging.

You can consult the Develocity build scans.

[quarkus-bot]

Status for workflow Quarkus Documentation CI

This is the status report for running Quarkus Documentation CI on commit eb359cd.

Failing Jobs

Status	Name	Step	Failures	Logs	Raw logs	Build scan
❓	CI Sanity Check		⚠️ Check →			🚧
❓	Documentation Build		⚠️ Check →			🚧

[cescoffier]

Thanks!

[gsmet]

Thanks for taking the time to contribute this fix!