Update instructor-guide.md

Author: valentina-s

resources/organizing/instructor-guide.md

@@ -42,6 +42,7 @@ Oceanhackweek usualy provides a JupyterHub environment within which participants
 * provide your github username to the organizing team so that you get added to JupyterHub
 * familiarize yourself with the JupyterHub environment ([JupyterHub Intro](https://github.com/valentina-s/oceanhackweek.github.io/blob/instructor-guide/resources/prep/jupyterhub.md))
 * Identify which packages (and corresponding versions) you will need for the tutorial and provide them to the organizing team so that they are included into an image for building the JupyterHub (those can be PyPi, `conda`/`conda-forge`, R)
+* Contribute your tutorial content to the corresponding OHWYY branch in [https://github.com/oceanhackweek/ohw-tutorials/](https://github.com/oceanhackweek/ohw-tutorials/)
 * Ensure participants have access to the datasets used in the tutorial
   * If there is need to store some datasets on JupyterHub, let us know!
   * Make sure the datasets are reduced to a reasonable size to demonstrate the point, but not make the tutorial cumbersome to run