message: docs(readme): fix typo in extension documentation
diff: @@ -23,7 +23,7 @@ In the example below it's using callFake that will prevent to execute the functi
  ```ts
  import { Provider } from "ts-auto-mock/extension";
  -Provider.instance.provideMethodWithDeferredValue((name: string, value: () => any)) => {
  +Provider.instance.provideMethodWithDeferredValue((name: string, value: () => any) => {
  return jasmine.createSpy(name).and.callFake(value);
  });
  ```
  