add zenodo link for citation of the tutorial

Author: SarahAlidoost

README.md

@@ -34,7 +34,8 @@ Please see [information][contact-info] on how to subscribe to user mailing list.
 
 ## Citation
 
-To cite this tutorial, please use the information available [here](CITATION.cff).
+To cite this tutorial, please use the information available at
+[http://doi.org/10.5281/zenodo.3974592](http://doi.org/10.5281/zenodo.3974592).
 
 [ESMValTool-site]: https://www.esmvaltool.org/
 [ESMValTool-doc]: https://esmvaltool.readthedocs.io/en/latest/

_episodes/07-conclusions.md

@@ -91,6 +91,7 @@ You may need to include a recipe or the output log as well.
 
 ### How do I cite the Tutorial?
 
-Please see [citation information](https://github.com/ESMValGroup/ESMValTool_Tutorial/blob/master/CITATION.cff)
+Please use citation information available at
+[http://doi.org/10.5281/zenodo.3974592](http://doi.org/10.5281/zenodo.3974592).
 
 {% include links.md %}

_extras/about.md

@@ -47,8 +47,8 @@ Please see
 
 ## Citation
 
-Please see
-[citation information](https://github.com/ESMValGroup/ESMValTool_Tutorial/blob/master/CITATION.cff).
+Please use citation information available at
+[http://doi.org/10.5281/zenodo.3974592](http://doi.org/10.5281/zenodo.3974592).
 
 ## Acknowledgements
 

index.md

@@ -72,7 +72,7 @@ independently.
 
 ## How to cite the Tutorial
 
-Please see
-[citation information](https://github.com/ESMValGroup/ESMValTool_Tutorial/blob/master/CITATION.cff).
+Please use citation information available at
+[http://doi.org/10.5281/zenodo.3974592](http://doi.org/10.5281/zenodo.3974592).
 
 {% include links.md %}