Updated CC to CC-BY.

_config.yml

@@ -5,7 +5,7 @@ title: Open textbooks demonstration
 author: Timon Idema
 logo: tudelft.png
 description: Demonstration of what can be done with a Jupyter Book. This book is meant as a template to build on.
-copyright: Delft University of Technology, CC BY-SA 4.0
+copyright: Delft University of Technology, CC BY 4.0
 
 # Only build files in the ToC to avoid building README, etc.
 only_build_toc_files: true

content/testfile.md

 # Tensors
 
 ## Introduction
-Some nice words to make you feel at ease. Or apprehensive. Whatever works for you.
+Notes from a course on differential geometry, converted directly from LaTeX.
 
 (sec:oneforms)=
 ## One-forms

index.md

@@ -13,4 +13,4 @@ This website is a [Jupyter Book](https://jupyterbook.org/intro.html). Markdown s
 
 The bar on the right of this page opens [Hypothesis](https://web.hypothes.is/), a service that allows you to add comments to pieces of text in this book.
 
-<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a>
+<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png"/></a>