message: (docs): Add sentence to clarify `jest.mock` is per file.
diff: @@ -123,6 +123,8 @@ jest.mock('../moduleName', () => {
  *Warning: Importing a module in a setup file (as specified by `setupTestFrameworkScriptFile`) will prevent mocking for the module in question, as well as all the modules that it imports.*
  +Modules that are mocked with `jest.mock` are mocked only for the file that calls `jest.mock`. Another file that imports the module will get the original implementation even if run after the test file that mocks the module.
  +
  Returns the `jest` object for chaining.
  ### `jest.clearAllMocks()`
  