Update README.md

README.md

@@ -5,7 +5,7 @@ This repository contains the slides/notebooks for the statistics lectures.
 
 ## Material
 
- - lecture 1: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?labpath=lecture_1.ipynb)
- - lecture 2: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?labpath=lecture_2.ipynb)
-  - lecture 3: [download notebool](); [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?labpath=lecture_3.ipynb)
-   - lecture 4: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?labpath=lecture_4.ipynb)
+ - lecture 1: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?filepath=lecture_1.ipynb)
+ - lecture 2: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?filepath=lecture_2.ipynb)
+  - lecture 3: [download notebool](); [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?filepath=lecture_3.ipynb)
+   - lecture 4: [download notebook]();  [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/https%3A%2F%2Fgitlab.rrz.uni-hamburg.de%2FBAN1966%2Fstatlecture.git/HEAD?filepath=lecture_4.ipynb)