docs(tutorial/step-07): update path to phone detail page in scenario

[juwalter]

tutorial/doc not in line with code for tutorial

[mary-poppins]

Thanks for the PR!

• Contributor signed CLA now or in the past
  • If you just signed, leave a comment here with your real name
• PR's commit messages follow the commit message format

If you need to make changes to your pull request, you can update the commit with git commit --amend.
Then, update the pull request with git push -f.

Thanks again for your help!

[petebacondarwin]

There is also another url that was wrong. Fixed that and landed, thanks.