fix broken link in levees.qmd (#87)

Author: gregorywaynepower

content/tutorials/earthworks/levees.qmd

@@ -63,7 +63,7 @@ This tutorial covers:
 This tutorial can be run as a 
 [computational notebook](https://grass-tutorials.osgeo.org/content/tutorials/earthworks/levees.ipynb).
 Learn how to work with notebooks in the tutorial
-[Get started with GRASS & Python in Jupyter Notebooks](./get_started/fast_track_grass_and_python.qmd).
+[Get started with GRASS & Python in Jupyter Notebooks](./../get_started/fast_track_grass_and_python.qmd).
 :::
 
 # Setup
@@ -643,4 +643,4 @@ m.save("images/levees_09.webp")
 
 :::
 
-![Flood simulation](images/levees_09.webp)
+![Flood simulation](images/levees_09.webp)