Remove unnecessary --all option

episodes/08-conflicts.md

@@ -34,7 +34,7 @@ In addition, [conflicts.pptx](extras/conflicts.pptx) shows an animation of all p
 ## Create a new Branch and start your Work
 
 - Show the existing branches
-  - `git branch --all`
+  - `git branch`
   - Explain the labels `master` and `HEAD`
 - Show graph of the repository
   - Draw state of the repository