Added missing '/status' in HTTP status request in the documentation of 'SQL-based ingestion and multi-stage query task API'

[drudi-at-coffee]

Added missing '/status' in HTTP status request

Description

Just correcting the HTTP status request in the Documentation of 'SQL-based ingestion and multi-stage query task API'

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This PR has:

• been self-reviewed.
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[techdocsmith]

LGTM. And inline with:
https://github.com/apache/druid/blob/master/examples/quickstart/jupyter-notebooks/api-tutorial.ipynb

Thanks for the contribution @drudi-at-coffee !