Update inputFormat field in Avro Extension in Druid documentation

[pds3095]

For me inputFormat with value : "io.druid.data.input.avro.AvroValueInputFormat" worked . I've Druid setup in cluster mode. Took me a long time to get to this. Please make the changes.

Fixes #XXXX.

Description

Fixed the bug ...

Renamed the class ...

Added a forbidden-apis entry ...

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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.
• 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.
• added integration tests.
• been tested in a test Druid cluster.

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Key changed/added classes in this PR

• MyFoo
• OurBar
• TheirBaz

[vogievetsky]

Wait, is that right? Sounds like the Avro extension should be updated instead

[gianm]

It is org.apache.druid.data.input.avro.AvroValueInputFormat in Druid 0.13+. @pds3095, I think you might have an older version of Druid.

[pds3095]

@gianm You're right. We're on Druid 0.12.1
But is it mentioned anywhere for older versions?

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