Follow-up from "Adds new field to external status checks form"

The following discussion from !159822 (merged) should be addressed:

• @jachapman started a discussion: (+1 comment)

  suggestion: In the official Vue 2 style guide, they require (highest severity) naming components with more than one word, so they never get confused with or conflict with native HTML elements.

  I think we should rename this component to status_check_form.vue, as that is what it's being imported as here.