message: Fix typo in repository modal
diff: @@ -256,7 +256,7 @@ const RepositoryModal = (props: Props) => {
  href="https://github.com/artifacthub/hub/blob/master/docs/metadata/artifacthub.yaml"
  className="text-reset"
  >
  - the spec]
  + <u>the spec</u>
  </ExternalLink>{' '}
  for more details.
  </p>
  