Typo in TH2:ProjectionX

[pamputt]

Hello, there is a typo mistake in the documentation of TH2:ProjectionX. It is written

myhist->ProjectionX(" “,firstybin,lastybin,[cutg1,cutg2]”);

A quotation mark is missing just before [cutg1,cutg2].

[couet]

Fixed.
There was 3 other places also.