fix tags of hander.Faults and handler.Spec structs

[chavacava]

Proposed changes

Fix tags of handler.Faults struct

Types of changes

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• New feature (non-breaking change which adds functionality)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices applies)

Checklist

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• I have read the CONTRIBUTING doc
• I have signed the commit for DCO to be passed.
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
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Dependency

• Please add the links to the dependent PR need to be merged before this (if any).

Special notes for your reviewer:

Found with revive