Update package.jsons of old exercises due to npm error

[MerleMak]

Package.json of Exercises

• html-forms
  • finding-a11y-errors
  • personal-profile-form
  • zoo
• js-forms
  • calculator
  • checkbox-input
  • demo-start
  • demo-end
  • handle-form-submit
• js-forms-2 -formvalidation

had to be updated, as is caused an npm error due to duplicated workspaces