gh-107298: Docs: add targets for some :c:member: and :c:macro: references

Add targets for PyStructSequence_Desc and PyStructSequence_Field members
and macros like Py_EQ.
Fix target for Py_RETURN_RICHCOMPARE.

Author: serhiy-storchaka

Doc/c-api/tuple.rst

@@ -147,39 +147,39 @@ type.
 
    Contains the meta information of a struct sequence type to create.
 
-   +-------------------+------------------------------+--------------------------------------+
-   | Field             | C Type                       | Meaning                              |
-   +===================+==============================+======================================+
-   | ``name``          | ``const char *``             | name of the struct sequence type     |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``doc``           | ``const char *``             | pointer to docstring for the type    |
-   |                   |                              | or ``NULL`` to omit                  |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``fields``        | ``PyStructSequence_Field *`` | pointer to ``NULL``-terminated array |
-   |                   |                              | with field names of the new type     |
-   +-------------------+------------------------------+--------------------------------------+
-   | ``n_in_sequence`` | ``int``                      | number of fields visible to the      |
-   |                   |                              | Python side (if used as tuple)       |
-   +-------------------+------------------------------+--------------------------------------+
+   .. c:member:: const char *name
+
+      name of the struct sequence type
+
+   .. c:member:: const char *doc
+
+      pointer to docstring for the type or ``NULL`` to omit
+
+   .. c:member:: PyStructSequence_Field *fields
+
+      pointer to ``NULL``-terminated array with field names of the new type
+
+   .. c:member:: int n_in_sequence
+
+      number of fields visible to the Python side (if used as tuple)
 
 
 .. c:type:: PyStructSequence_Field
 
    Describes a field of a struct sequence. As a struct sequence is modeled as a
    tuple, all fields are typed as :c:expr:`PyObject*`.  The index in the
-   :attr:`fields` array of the :c:type:`PyStructSequence_Desc` determines which
+   :c:member:`~PyStructSequence_Desc.fields` array of
+   the :c:type:`PyStructSequence_Desc` determines which
    field of the struct sequence is described.
 
-   +-----------+------------------+-----------------------------------------+
-   | Field     | C Type           | Meaning                                 |
-   +===========+==================+=========================================+
-   | ``name``  | ``const char *`` | name for the field or ``NULL`` to end   |
-   |           |                  | the list of named fields, set to        |
-   |           |                  | :c:data:`PyStructSequence_UnnamedField` |
-   |           |                  | to leave unnamed                        |
-   +-----------+------------------+-----------------------------------------+
-   | ``doc``   | ``const char *`` | field docstring or ``NULL`` to omit     |
-   +-----------+------------------+-----------------------------------------+
+   .. c:member:: const char *name
+
+      name for the field or ``NULL`` to end the list of named fields,
+      set to :c:data:`PyStructSequence_UnnamedField` to leave unnamed
+
+   .. c:member:: const char *doc
+
+      field docstring or ``NULL`` to omit
 
 
 .. c:var:: const char * const PyStructSequence_UnnamedField

Doc/c-api/typeobj.rst

@@ -1513,21 +1513,23 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    The following constants are defined to be used as the third argument for
    :c:member:`~PyTypeObject.tp_richcompare` and for :c:func:`PyObject_RichCompare`:
 
-   +------------------+------------+
-   | Constant         | Comparison |
-   +==================+============+
-   | :c:macro:`Py_LT` | ``<``      |
-   +------------------+------------+
-   | :c:macro:`Py_LE` | ``<=``     |
-   +------------------+------------+
-   | :c:macro:`Py_EQ` | ``==``     |
-   +------------------+------------+
-   | :c:macro:`Py_NE` | ``!=``     |
-   +------------------+------------+
-   | :c:macro:`Py_GT` | ``>``      |
-   +------------------+------------+
-   | :c:macro:`Py_GE` | ``>=``     |
-   +------------------+------------+
+   .. c:namespace:: NULL
+
+   +--------------------+------------+
+   | Constant           | Comparison |
+   +====================+============+
+   | .. c:macro:: Py_LT | ``<``      |
+   +--------------------+------------+
+   | .. c:macro:: Py_LE | ``<=``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_EQ | ``==``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_NE | ``!=``     |
+   +--------------------+------------+
+   | .. c:macro:: Py_GT | ``>``      |
+   +--------------------+------------+
+   | .. c:macro:: Py_GE | ``>=``     |
+   +--------------------+------------+
 
    The following macro is defined to ease writing rich comparison functions: