revert unintended autoformatting

Co-authored-by: Christian Clauss <cclauss@me.com>

Author: Hasenn

ciphers/enigma_machine2.py

@@ -125,7 +125,8 @@ def _plugboard(pbstring: str) -> dict:
     # b) has even length (so pairs can be made)
     if not isinstance(pbstring, str):
         raise TypeError(
-            f"Plugboard setting isn't type string ({type(pbstring)})")
+            f"Plugboard setting isn't type string ({type(pbstring)})"
+        )
     elif len(pbstring) % 2 != 0:
         raise Exception(f"Odd number of symbols ({len(pbstring)})")
     elif pbstring == "":