Update links

Author: rgaiacs

README.md

@@ -2,14 +2,14 @@
 
 [![repo2wasm](https://img.shields.io/badge/any_text-launch-F37626?logo=jupyter&label=Jupyter)](https://repo2wasm.github.io/template-requirements)
 
-[![Binder](http://mybinder.org/badge_logo.svg)](http://mybinder.org/v2/gh/binder-examples/requirements/HEAD)
+[![Binder](http://mybinder.org/badge_logo.svg)](http://mybinder.org/v2/gh/binder-examples/requirements/main?filepath=index.ipynb)
 
 A repo compatible with `repo2wasm` and mybinder.org using a `requirements.txt` as configuration file.
 
 Access the live version of this repo at
 
 - [GitHub Pages](https://repo2wasm.github.io/template-requirements)
-- [mybinder.org](http://mybinder.org/v2/gh/repo2wasm/template-requirements/HEAD)
+- [mybinder.org](http://mybinder.org/v2/gh/repo2wasm/template-requirements/main?filepath=index.ipynb)
 
 ## Notes
 The `requirements.txt` file should list all Python libraries that your notebooks