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

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Author: pre-commit-ci[bot]

examples/hotelling_law/hotelling_law/model.py

@@ -76,7 +76,7 @@ def __init__(
         consumer_preferences="default",
         environment_type="grid",
         mobility_rate=80,
-        seed = None
+        seed=None,
     ):
         # Initialize the model with parameters for number of agents,
         # grid size, mode of operation,environment type,