Merge pull request #3542 from enarddpascua/source

Update part4.md

Author: mluukkai

src/content/4/en/part4.md

@@ -9,6 +9,6 @@ lang: en
 In this part, we will continue our work on the backend. Our first major theme will be writing unit and integration tests for the backend. After we have covered testing, we will take a look at implementing user authentication and authorization.
 
 <i>Part updated 13th Feb 2024</i>
-- <i>Jest replaced with Node enbedded testrunner</i>
+- <i>Jest replaced with Node embedded testrunner</i>
 
 </div>