better format; using ruff now

gemini_key_manager/exceptions.py

@@ -6,13 +6,15 @@ Defines domain-specific exceptions for:
 - API operation constraints
 """
 
+
 class TermsOfServiceNotAcceptedError(Exception):
     """Indicates unaccepted Terms of Service for critical API operations.
-    
+
     Attributes:
         message (str): Human-readable error description
         url (str): URL for Terms of Service acceptance portal
     """
+
     def __init__(self, message, url):
         self.message = message
         self.url = url