chore: clarifying story names for hero components

[stephiescastle]

Checklist

• Include a description of your pull request and instructions for the reviewer to verify your work.
• Link to the issue if this PR is issue-specific.
• Create/update the corresponding story if this includes a UI component.
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Description

Cleans up story names for hero components in Storybook.

Instructions to test

1. make vue-storybook
2. View this section: http://localhost:6006/?path=/docs/components-heroes-overview--docs

OR view this directly on chromatic: https://668c47cbeb95392cd79c3c0d-iayokidrgk.chromatic.com/?path=/docs/components-heroes-overview--docs