switch hyphens to asterisks

Author: NathanielBlairStahn

docs/source/models/concept_models/vivarium_alzheimers/concept_model.rst

@@ -340,10 +340,11 @@ scenario, and input draw.
     - Default
     - Use (mostly) standard VPH observers:
 
-      - Mortality and Disability observers
-      - Disease observer for Alzheimers
-      - Custom observer for Alzheimer's testing (based on DiseaseObserver)
-      - CategoricalInterventionObserver for Alzheimer's treatment
+      * Mortality and Disability observers
+      * Disease observer for Alzheimers
+      * Custom observer for Alzheimer's testing (based on
+        DiseaseObserver)
+      * CategoricalInterventionObserver for Alzheimer's treatment
   * - 1.0
     - Simple SI model of AD using GBD data for AD and other dementias
     - Reference