minor changes to git training slides

2019/2019-06-11_gitTraining/slides/best_practices.md

@@ -28,5 +28,4 @@
 
 * `Push` often - avoid conflicts
 
-<br><br>
 Remember: **A `push` a day keeps conflicts away!**

2019/2019-06-11_gitTraining/slides/branches.md

@@ -72,7 +72,7 @@ If the local branch does not exist but the remote does, it is created automatica
 
 ## Create your own version
 
-Assume that you want to work on a function for adding 2 numbers.
+Assume that you want to work on a file:
 
 <div class="fragment">