Forced Alignment in body text

I just received this email from Amazon..

During our review of your title for customer update notification, we found minor quality issues that we would like to inform you of.

The body text for your book has forced alignment. It's important that your book file does not force alignment for body text.

Would this be what is located under justification under each body style? It says word spacing min 80% desired 100% and maximum 133%?

Or do they mean someting else I'm not seeing?

thanks so much- newbie to the program - using CS5.5

carrie