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

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

bot/helpers/ResistorColourCode.py

@@ -665,7 +665,7 @@ def __repr__(self):
 COLOUR_CODES = {}
 for i, colour_name in enumerate(COLOUR_NAMES):
     digit = i - 2
-    multiplier = 10 ** digit
+    multiplier = 10**digit
     # digit is defined positive
     if digit < 0:
         digit = None