feat(component-mail-service): add correct copy to invite author email

packages/component-mail-service/src/Mail.js

@@ -44,11 +44,11 @@ module.exports = {
         } ${replacements.buttonText}`
         break
       case 'invite-author':
-        subject = 'Hindawi Invitation'
+        subject = 'Author Invitation'
         replacements.headline =
-          'You have been invited as an Author to a manuscript.'
+          'You have been invited to join Hindawi as an Author.'
         replacements.paragraph =
-          "The manuscript will be visible on your dashboard once it's submitted. Please confirm your account and set your account details by clicking on the link below."
+          'Please confirm your account and set your account details by clicking on the link below.'
         replacements.previewText = 'You have been invited'
         replacements.buttonText = 'CONFIRM'
         replacements.url = helpers.createUrl(dashboardUrl, resetPath, {