add a new line before package name and block comment

[mrasong]

go-lint gives a warning when the block comment without a new line of package name.

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[jharshman]

@mrasong CI is failing because your change caused the templates to no longer match the golden files.

[github-actions]

This PR is being marked as stale due to a long period of inactivity

[umarcor]

Ref #1044.

[jharshman]

CI not passing. Closing as stale.