fix link to pytest docs thanks to contributor

mattmakai · mattmakai · commit 74b20e73f9aa · 2019-10-29T06:15:14.000-04:00
diff --git a/content/pages/04-web-development/36-unit-testing.markdown b/content/pages/04-web-development/36-unit-testing.markdown
@@ -35,8 +35,8 @@ by writing the test cases to exercise multiple parts of code at once.
 * [unittest](https://docs.python.org/3/library/unittest.html)
   is the built-in standard library tool for testing Python code.
 
-* [pytest](http://pytest.org/latest/) is a complete testing tool that
-  emphasizes backwards-compatibility and minimizing boilerplate code.
+* [pytest](https://docs.pytest.org/en/latest) is a complete testing tool 
+  that emphasizes backwards-compatibility and minimizing boilerplate code.
 
 * [nose](https://nose.readthedocs.org/en/latest/) is an extension to
   unittest that makes it easier to create and execute test cases.
