Update README.md

README.md

@@ -3,11 +3,13 @@ Extract some insightful technical points from the book "The Art of Problem-Solvi
 
 
 
-# Table of Contents
+# Professional Journey:
+
 [A Brief Overview of My Professional Journey](professional_journey)
 
 
 
+# Table of Contents
 [How can the scalability of MySQL be improved](scalability.md)
 
 [How to explain why Repeatable Read surprisingly outperforms Read Committed?](isolation.md)
@@ -30,8 +32,6 @@ Extract some insightful technical points from the book "The Art of Problem-Solvi
 
 
 
-
-
 # Book Link:
 
 [The Art of Problem-Solving in Software Engineering:How to Make MySQL Better](https://github.com/advancedmysql/The-Art-of-Problem-Solving-in-Software-Engineering_How-to-Make-MySQL-Better).