Added documentation for local golangci-lint use.

[bendory]

Changes

Added documentation for local golangci-lint use.

Contributes toward #5899

/kind documentation

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• Has Docs included if any changes are user facing
• [N/A] Has Tests included if any functionality added or changed
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Release Notes

NONE

[XinruZhang]

/test pull-tekton-pipeline-alpha-integration-tests

Flake: TestExamples/v1beta1/pipelineruns/workspace-from-volumeclaimtemplate

[Yongxuanzhang]

thank you!
/lgtm

[tekton-robot]

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