Fix links to BMI notebook

Author: BSchilperoort

docs/bmi.md

@@ -43,7 +43,7 @@ Alternatively, if the environmental variable `STEMMUS_SCOPE` is configured, the
 
 ## Using the BMI
 
-A [notebook demonstration the use of the Basic Model Interface](BMI_demo.ipynb) is available.
+A [notebook demonstration the use of the Basic Model Interface](../notebooks/BMI_demo/) is available.
 For more information on using BMI, see the [CSDMS website](https://csdms.colorado.edu/wiki/BMI).
 
 If you need access to other model variables that are not yet available in the BMI, please raise an issue on the [STEMMUS_SCOPE repository](https://github.com/EcoExtreML/STEMMUS_SCOPE/issues), or leave a comment if an issue is open already.

mkdocs.yml

@@ -7,8 +7,8 @@ nav:
   - Installation: installation_instructions.md
   - Notebook page: notebooks/run_model_in_notebook.ipynb
   - BMI:
-    "BMI instructions": bmi.md
-    "BMI demonstration": notebooks/BMI_demo.ipynb
+    - "BMI instructions": bmi.md
+    - "BMI demonstration": notebooks/BMI_demo.ipynb
   - Contributing guide: CONTRIBUTING.md
   - API reference: reference.md