[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

conversions/hex_to_rgb.py

@@ -77,4 +77,3 @@ def hex_to_rgb(hex_color: str) -> str:
     import doctest
 
     doctest.testmod()
-