Update kubernetes.md

[AdheipSingh]

Description

• Druid Operator repo has moved from druid-io to datainfrahq. The druid-io repo is deprecated.
• Refer to Requesting Druid PMC for write permission on repo  druid-io/druid-operator#329.
• PR for deprecation Deprecation Notice druid-io/druid-operator#336
• The project will be externally maintained in the following fork druid-operator

Fixed the bug ...

Renamed the class ...

Added a forbidden-apis entry ...

Release note

---

Key changed/added classes in this PR

• MyFoo
• OurBar
• TheirBaz

---

This PR has:

• been self-reviewed.
  • using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• 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.

[vogievetsky]

the checkstyle failure was fixed here #13860