Fix docs build

Author: Anton3

changelog/13228.feature.rst

@@ -1,3 +1,3 @@
-:ref:`pytest.HIDDEN_PARAM` can now be used in ``id`` of :func:`pytest.param` or in
+:ref:`hidden-param` can now be used in ``id`` of :func:`pytest.param` or in
 ``ids`` of :py:func:`Metafunc.parametrize <pytest.Metafunc.parametrize>`.
 It hides the parameter set from the test name.

doc/en/reference/reference.rst

@@ -20,7 +20,7 @@ The current pytest version, as a string::
     >>> pytest.__version__
     '7.0.0'
 
-.. _`pytest.HIDDEN_PARAM ref`:
+.. _`hidden-param`:
 
 pytest.HIDDEN_PARAM
 ~~~~~~~~~~~~~~~~~~~

src/_pytest/mark/__init__.py

@@ -75,11 +75,12 @@ def test_eval(test_input, expected):
 
         :ref:`pytest.mark.usefixtures <pytest.mark.usefixtures ref>` cannot be added via this parameter.
 
+    :type id: str | Literal[pytest.HIDDEN_PARAM] | None
     :param id: The id to attribute to this parameter set.
 
         .. versionadded: 8.4
 
-        :ref:`pytest.HIDDEN_PARAM` means to hide the parameter set
+        :ref:`hidden-param` means to hide the parameter set
         from the test name. Can only be used at most 1 time, as
         test names need to be unique.
     """

src/_pytest/python.py

@@ -1212,7 +1212,7 @@ def parametrize(
 
             .. versionadded: 8.4
 
-            :ref:`pytest.HIDDEN_PARAM` means to hide the parameter set
+            :ref:`hidden-param` means to hide the parameter set
             from the test name. Can only be used at most 1 time, as
             test names need to be unique.