Correct filter description of /v1/persons

Clean up language and clarify what happens when you set the active
parameter of /v1/persons.

greg/api/views/person.py

@@ -36,7 +36,7 @@ class PersonViewSet(viewsets.ModelViewSet):
             ),
             OpenApiParameter(
                 name="active",
-                description="If try only include persons with an active role",
+                description="Only persons with an active role is listed if true",
                 required=False,
                 type=bool,
             ),