Doc for rotate_range indicates the wrong sign

[maxime915]

Hello,

I think there is an extra minus sign in the doc for the first value of the rotate_range parameter.

MONAI/monai/transforms/spatial/array.py

Line 1809 in e538f7f

`uniform[-rotate_range[i][0], rotate_range[i][1])` will be used to generate the rotation parameter

The method _get_rand_param uses the range without any minus sign added to the first argument.

MONAI/monai/transforms/spatial/array.py

Line 1864 in e538f7f

out_param.append(self.R.uniform(f[0], f[1]) + add_scalar)

If you agree that this is just a documentation issue, I'd be happy to search for other transform having the same issue (RandAffine and RandAffined seem to have the same issue) and create a PR to remove the extra signs.

Best