Fix bibtex entry. Try 3.

src/lbmpy/enums.py

@@ -230,9 +230,9 @@ class SubgridScaleModel(Enum):
     """
     SMAGORINSKY = auto()
     """
-    See :function:`lbmpy.turbulence_models.add_smagorinsky_model`
+    See :func:`lbmpy.turbulence_models.add_smagorinsky_model`
     """
     QR = auto()
     """
-    See :function:`lbmpy.turbulence_models.add_qr_model`
+    See :func:`lbmpy.turbulence_models.add_qr_model`
     """