Fix link to cosima model agnostic analysis (#626)

Author: charles-turner-1

doc/index.rst

@@ -35,7 +35,7 @@ or using ``conda``
    examples/introduction
    EarthCube 2021 demo <https://earthcube2021.github.io/ec21_book/notebooks/ec21_cherian_etal/DC_01_cf-xarray.html>
    CESM ocean model demo <https://pop-tools.readthedocs.io/en/latest/examples/cesm-cmip-cf-xarray.html>
-   COSIMA ocean-sea ice model demo <https://cosima-recipes.readthedocs.io/en/latest/Tutorials/Model_Agnostic_Analysis.html>
+   COSIMA ocean-sea ice model demo <https://cosima-recipes.readthedocs.io/en/latest/01-Cooking-Lessons-101/02-Advanced/Model_Agnostic_Analysis.html>
 
 .. toctree::
    :maxdepth: 2