[docs] super - take the Note higher pls

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Hi


I would like to propose putting the note "Note super() only works for 
new-style classes." right after "super(type[, object-or-type])" here:

https://docs.python.org/2/library/functions.html#super


Reason - I was just making the tutorial, read first few lines and tried 
to make my own class + subclass + method then, which wasnt working for 
like 15mins until i recognised that my class must have "(object)".

Of course You may just say that I'm blind and I should read more before 
trying something. True :P
But still putting the Note higher may safe others time in the future :)


Regards
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