feat: update print date README

print_date/README.md

@@ -1,38 +1,19 @@
 # Goal
+
 Unit test the printCurrentDate function.
 
 1. Test coupled code
 2. Test the code with doubles from a library.
-3Test the code with doubles created by you.
+3. Test the code with doubles created by you.
+
 # Code to test
+```python
     class PrintDate:
         def print_current_date(self):
             print(datetime.today())
-# Learnings
-How to build a Mock and Stub manually.
-
-How to use Unittest Mock to generate the doubles.
-
-## Tools
-[Unittest documentation](https://cpython-test-docs.readthedocs.io/en/latest/library/unittest.mock.html)
-### Example of spy
+```
 
-    def test_should_send_an_email(self):
-        emailSender = Mock(EmailSender)
-        user_registration = UserRegistration(email_sender)
-
-        user_registration.register()
-
-        email_sender.send.assert_called()
-
-
-### Example of stub
-
-    def test_should_success_when_password_is_valid(self):
-        password_validator = Mock(PasswordValidator)
-        password_validator.is_valid = Mock(return_value=true)
-        user_registration = UserRegistration(password_validator)
-
-        success = user_registration.register()
+# Learnings
 
-        assertTrue(success)
+- How to use Stubs and Spies to generate the doubles.
+- How to build a Mock and Stub manually.