Bug 981092 - Update /gigabit copy according to the given text on GDoc

Bug 981092 - update /gigabit copy according to https://docs.google.com/a/mozillafoundation.org/document/d/1DLFHbXvxsynWqacUkn8wVxSDJfzvKEuFYhOfEW8iFOY/edit?disco=AAAAAGAHhqo&pli=1#