Add blank line for better readability in README

Author: saloumeh-67

shared-modules/specialist-career-training/week1/README.md

@@ -16,3 +16,4 @@ By the end of this session, you will be able to:
 - [Preparation](preparation.md)
 - [Session Plan](session-plan.md) (for mentors)
 - [Assignment](assignment.md)
+