docs: fix inconsistent controller annotation

[sandipb]

What this PR does / why we need it:

The annotation for the controller class was inconsistent in the example. From my best understanding, I have tried to fix the inconsistency.

Also, removed an incomplete sentence. And made one sentence more clear by breaking it up.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

How Has This Been Tested?

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

[k8s-ci-robot]

@sandipb: This issue is currently awaiting triage.

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[k8s-ci-robot]

Hi @sandipb. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[longwuyuan]

/kind documentation
hi @sandipb , thanks for your contribution. Looks good to merge.
/ok-to-test
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: longwuyuan, sandipb

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• docs/OWNERS [longwuyuan]

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