update Getting Started

2019/2019-09-09_testCourseAdv/slides/gettingStarted.md

 ## Getting Started
 
-Fork and clone the repository XX  
+Fork and clone the tutorial repository
 ```bash
 git clone ssh://git@git-r3lab-server.uni.lu:8022/R3-core/outreach/presentations-internal.git
 ```
 
-Create a new branch off of develop and name it YY  
+Create a new branch off of develop and name it nyNameBranch
 ```bash
 git checkout develop
 ```