[docs] Misnomer on webpage

[hyphen point]

 https://docs.python.org/3.5/tutorial/stdlib.html

I might be wrong (English is not my mother-tongue) but in the following
sentence in section 10.1 seems to be an error.


The built-in dir() <https://docs.python.org/3.5/library/functions.html#dir>
>  and help() <https://docs.python.org/3.5/library/functions.html#help> functions
> are useful as interactive aids for working with large modules like os
> <https://docs.python.org/3.5/library/os.html#module-os>:



Shouldn't the plural of aide be aides?

Greetings, Mat
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