Removed ambiguous note in PSR-0.md

Creo que la nota Nº1 es ambigua y solamente repite lo que dice el contenido al que hace referencia, propongo eliminarlo.

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I think the note Nº1 is ambiguous and only repeats what the referenced content, I suggest removing it.
Merge pull request #151 from dosten/patch-1

Removed ambiguous note in PSR-0.md