Update Lerntagebuch.md

Lerntagebuch.md

@@ -435,9 +435,12 @@ Errors can have a significant impact on software systems. They can cause softwar
 
 - Motivation:
   - Quality costs: The cost of fixing bugs increases with the age of the code.
-  - Which tests to automate?: Unit tests should be written for all public methods and classes.
-  - How to write a good unit test?: A good unit test is independent, repeatable, complete, accurate, and up-to-date.
-  - What does "trustworthy" mean?: A trustworthy unit test is reliable and provides reliable results.
+  - Which tests to automate?
+    - Unit tests should be written for all public methods and classes.
+  - How to write a good unit test?
+    - A good unit test is independent, repeatable, complete, accurate, and up-to-date.
+  - What does "trustworthy" mean?
+    - A trustworthy unit test is reliable and provides reliable results.
   - Timely: Unit tests should be written as early as possible to detect bugs early.
   - Conclusion: Unit tests are the most frequently automated tests, and Test-Driven Development (TDD) is the most suitable approach for their creation.