update toc

Author: maniebra

README.md

@@ -14,8 +14,8 @@ Since I am studying software engineering, I encountered many concepts and ideas
 	- [Roles in Scrum](The%20Agile%20Philosophy/Roles%20in%20Scrum.md)
 	- [Sprints](The%20Agile%20Philosophy/Sprints.md)
 - [System Design](/System%20Design/)
-	- [0. Introduction](/System%20Design/0.%20Introduction/)
-		- [0.1 Systems Development Life Cycle (SDLC)](/System%20Design/0.%20Introduction/0.1%20Systems%20Development%20Life%20Cycle%20(SDLC).md)
+	- [Introduction](/System%20Design/Introduction/)
+		- [Systems Development Life Cycle (SDLC)](Systems%20Development%20Life%20Cycle%20(SDLC).md)
 - [Process Models](/Process%20Models/)
 	- [V Model](/Process%20Models/V-Model.md)
 	- [Waterfall Model](Process%20Models/Waterfall%20Model.md)