Fix docstring for hssm.Link

src/hssm/link.py

@@ -20,22 +20,24 @@ class Link(bmb.Link):
 
     Parameters
     ----------
-    name : str
+    name
         The name of the link function. If it is a known name, it's not necessary to pass
         any other arguments because functions are already defined internally. If not
         known, all of `link``, ``linkinv`` and ``linkinv_backend`` must be specified.
-    link : function
+    link : optional
         A function that maps the response to the linear predictor. Known as the
         :math:`g` function in GLM jargon. Does not need to be specified when ``name``
         is a known name.
-    linkinv : function
+    linkinv : optional
         A function that maps the linear predictor to the response. Known as the
         :math:`g^{-1}` function in GLM jargon. Does not need to be specified when
         ``name`` is a known name.
-    linkinv_backend : function
+    linkinv_backend : optional
         Same than ``linkinv`` but must be something that works with PyMC backend
         (i.e. it must work with PyTensor tensors). Does not need to be specified when
         ``name`` is a known name.
+    bounds : optional
+        Bounds of the response scale. Only needed when ``name`` is ``gen_logit``.
     """
 
     def __init__(