changing to branch and removing references

Author: valentina-s

docs/_config.yml

@@ -14,7 +14,7 @@ execute:
 repository:
   url: https://github.com/executablebooks/jupyter-book  # Online location of your book
   path_to_book: docs  # Optional path to your book, relative to the repository root
-  branch: master  # Which branch of the repository should be used when creating links (optional)
+  branch: lesson_content  # Which branch of the repository should be used when creating links (optional)
 
 # Add GitHub buttons to your book
 # See https://jupyterbook.org/customize/config.html#add-a-link-to-your-repository