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

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

Author: pre-commit-ci[bot]

physics/faraday_lenz_law.py

@@ -90,4 +90,4 @@ def induced_electromotive_force(
 if __name__ == "__main__":
     from doctest import testmod
 
-    testmod()
+    testmod()