docs(guide/Scopes): (fix) gramatical error line 248

[philosoralphter]

changed "as well as it guarantees" to ", and guarantees"

before:

[mary-poppins]

I'm sorry, but I wasn't able to verify your Contributor License Agreement (CLA) signature. CLA signature is required for any code contributions to AngularJS.

Please sign our CLA and ensure that the CLA signature email address and the email address in this PR's commits match.

If you signed the CLA as a corporation, please let us know the company's name.

Thanks a bunch!

PS: If you signed the CLA in the past then most likely the email addresses don't match. Please sign the CLA again or update the email address in the commit of this PR.
PS2: If you are a Googler, please sign the CLA as well to simplify the CLA verification process.

[philosoralphter]

Hello mary-poppins. We just went through this on my last pull request (#9818). I can't figure out why the CLA isnt' being verified. I have tried to sign it a number of times now. I did notice that my github email was not being shared publicly. Could that have been it? Any other suggestions?

[caitp]

don't worry about the robot ralph, the screenshot is basically good enough as far as I'm concerned. The robot will hopefully be doing her job correctly again in a short, finite number of days