Typo: compute_contraction_upper_bond

[Ao-chuba]

In the gbasis/screening.py file, there is a typo in the function name compute_contraction_upper_bond where it should ideally be named compute_contraction_upper_bound.
You can find the definition of the function in gbasis/screening.py:

def compute_contraction_upper_bond(contractions, deriv_order):

[dhruvch12]

Hello! I am preparing for my GSoC interview and would love to tackle this quick typo fix to get more familiar with the codebase. I will open a PR shortly!

[Ao-chuba]

Sure u can. If u do open a PR ill close mine. Best of luck with your interview!