🌱 Update inline config docs and annotations

[perdasilva]

Description

API review suggested tweaking the working and adding the // +unionMember annotation to the inline configuration.

Reviewer Checklist

• API Go Documentation
• Tests: Unit Tests (and E2E Tests, if appropriate)
• Comprehensive Commit Messages
• Links to related GitHub Issue(s)

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[Copilot]

Pull request overview

This PR improves the inline configuration documentation and adds the +unionMember annotation to the ClusterExtensionConfig.Inline field as suggested by an API review. The changes make the documentation clearer, fix a grammatical error in the original text, and ensure proper union type annotation for the Kubernetes API.

Key Changes:

• Rewrote inline configuration documentation for better clarity and grammar
• Added // +unionMember annotation to the Inline field in ClusterExtensionConfig
• Updated all generated CRD manifests and API documentation to reflect the source changes

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
api/v1/clusterextension_types.go	Updated inline configuration documentation comments and added +unionMember annotation
manifests/experimental.yaml	Generated CRD manifest updated with new documentation text
manifests/experimental-e2e.yaml	Generated E2E CRD manifest updated with new documentation text
helm/olmv1/base/operator-controller/crd/experimental/olm.operatorframework.io_clusterextensions.yaml	Helm CRD manifest updated with new documentation text
docs/api-reference/olmv1-api-reference.md	API reference documentation updated to match source code comments

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