move max_length error box to step where error actually occurs

[debharper]

The amount of detail of the documentation is excellent. My problem stems from the organization of the parts of the documentation. I am new to django -- working through the tutorial step by step. After editing models.py, I read the box about errors about max_length. At that time it didn't seem to apply to me. After carefully reading another screen-worth of information, I executed the command "python manage.py sql polls" and encountered the error. I think the documentation would be improved by moving the box about the max_length error down below the python command that causes it.

[Jeff Anderson]

The error is next to the example of code that calls it. Moving it could be counter-intuitive for others.