Update screening.py docstrings

[AntObi]

Pull Request Template

Description

• Corrected docstring of smact_filter

Type of change

• This change requires a documentation update

How Has This Been Tested?

Test Configuration:

• Python version: 3.9
• Operating System: WSL2(Ubuntu)

Reviewers

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

[codecov]

Codecov Report

Merging #147 (6aca25b) into master (aab9a93) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #147   +/-   ##
=======================================
  Coverage   72.85%   72.85%           
=======================================
  Files          24       24           
  Lines        1879     1879           
=======================================
  Hits         1369     1369           
  Misses        510      510           

Impacted Files	Coverage Δ
smact/screening.py	88.98% <ø> (ø)