feat: add intro text to email sign up page (#39409)

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Mrugesh Mohapatra <1884376+raisedadead@users.noreply.github.com>

api-server/server/boot/settings.js

@@ -246,9 +246,7 @@ const updatePrivacyTerms = (req, res, next) => {
     }
     return res.status(200).json({
       type: 'success',
-      message:
-        'We have updated your preferences. ' +
-        'You can now continue using freeCodeCamp!'
+      message: `We have updated your preferences.`
     });
   });
 };