message: fix(frontend): corrects link to help section
diff: Having trouble adding your account to the Speckle Manager? Read a
  <a
  _target="_blank"
  - href="http://speckle.docs/user/FAQs.html#i-cannot-add-an-account-in-speckle-manager"
  + href="http://speckle.guide/user/FAQs.html#i-cannot-add-an-account-in-speckle-manager"
  >
  quick help article on this
  </a>
  