Fix SchemaRegistryClient docs

[pko-trackunit]

Fixed few mismached URLs and missing default value for a parameter.

[pko-trackunit]

Also, it feels like lookup_schema() method should not be using an endpoint that "Register a new schema under the specified subject". Unless I am misunderstanding what "lookup" means.

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[fangnx]

Hi @pko-trackunit, thanks for raising the PR. I double checked and the two doc URLs you fixed and the one for lookup_schema() (should be https://docs.confluent.io/platform/current/schema-registry/develop/api.html#post--subjects-(string- subject)) are indeed incorrect

Also, it feels like lookup_schema() method should not be using an endpoint that "Register a new schema under the specified subject". Unless I am misunderstanding what "lookup" means.

[fangnx]

Let's omit the /platform part (which will be added during redirection) of the URl to stay consistent with the rest of URLs in docs

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[Copilot]

Pull Request Overview

This PR fixes documentation issues in SchemaRegistryClient by correcting mismatched API reference URLs and adding a missing default value for the version parameter.

• Corrected four API reference URLs in docstrings to point to the correct endpoints
• Added default value "latest" to the version parameter in get_version method

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/confluent_kafka/schema_registry/_sync/schema_registry_client.py	Fixed API reference URLs in docstrings and added default value for version parameter
src/confluent_kafka/schema_registry/_async/schema_registry_client.py	Same fixes as sync version - corrected URLs and added version parameter default

[Copilot]

Adding a default value to an existing parameter is a breaking change for callers using positional arguments. Consider whether this change maintains backward compatibility with existing code that may call get_version(subject, version, deleted=True).

Suggested change

	self, subject_name: str, version: Union[int, str] = "latest",
	self, subject_name: str, version: Union[int, str] = "latest", *,

[rayokota]

/sem-approve