old_contents: """
  Extension that generates configuration files for the Tox test automation tool.
  """
  
  from typing import List
  
  from .. import structure
  from ..actions import Action, ActionParams, ScaffoldOpts, Structure
  from . import Extension
  
  
  class NoTox(Extension):
      """Prevent a tox configuration file from being created"""
  
      def activate(self, actions: List[Action]) -> List[Action]:
          """Activate extension, see :obj:`~pyscaffold.extension.Extension.activate`."""
          return self.register(actions, remove_files, after="define_structure")
  
  
  def remove_files(struct: Structure, opts: ScaffoldOpts) -> ActionParams:
      """Remove .tox.ini file to structure"""
      return structure.reject(struct, "tox.ini"), opts
  
new_contents: """
  Extension that removes configuration files for the Tox test automation tool.
  """
  
  from typing import List
  
  from .. import structure
  from ..actions import Action, ActionParams, ScaffoldOpts, Structure
  from . import Extension
  
  
  class NoTox(Extension):
      """Prevent a tox configuration file from being created"""
  
      def activate(self, actions: List[Action]) -> List[Action]:
          """Activate extension, see :obj:`~pyscaffold.extension.Extension.activate`."""
          return self.register(actions, remove_files, after="define_structure")
  
  
  def remove_files(struct: Structure, opts: ScaffoldOpts) -> ActionParams:
      """Remove .tox.ini file to structure"""
      return structure.reject(struct, "tox.ini"), opts
  
subject: Fix wrong docstring in no_tox