Doc: fix Sphinx reference warnings in Doc/c-api/

Author: Aniketsy

Doc/c-api/init_config.rst

@@ -1235,9 +1235,9 @@ PyConfig
 
    .. c:member:: wchar_t* base_executable
 
-      Python base executable: :data:`sys._base_executable`.
+      Python base executable: ``sys._base_executable``.
 
-      Set by the :envvar:`__PYVENV_LAUNCHER__` environment variable.
+      Set by the ``__PYVENV_LAUNCHER__`` environment variable.
 
       Set from :c:member:`PyConfig.executable` if ``NULL``.
 
@@ -1748,7 +1748,7 @@ PyConfig
 
       * On macOS, use :envvar:`PYTHONEXECUTABLE` environment variable if set.
       * If the ``WITH_NEXT_FRAMEWORK`` macro is defined, use
-        :envvar:`__PYVENV_LAUNCHER__` environment variable if set.
+        ``__PYVENV_LAUNCHER__`` environment variable if set.
       * Use ``argv[0]`` of :c:member:`~PyConfig.argv` if available and
         non-empty.
       * Otherwise, use ``L"python"`` on Windows, or ``L"python3"`` on other
@@ -1984,8 +1984,7 @@ PyConfig
 
       The :mod:`warnings` module adds :data:`sys.warnoptions` in the reverse
       order: the last :c:member:`PyConfig.warnoptions` item becomes the first
-      item of :data:`warnings.filters` which is checked first (highest
-      priority).
+      item of :attr:`warnings.filters` which is checked first (highest priority).
 
       The :option:`-W` command line options adds its value to
       :c:member:`~PyConfig.warnoptions`, it can be used multiple times.

Doc/c-api/intro.rst

@@ -1160,7 +1160,7 @@ when defined by the compiler, will also implicitly enable :c:macro:`!Py_DEBUG`.
 In addition to the reference count debugging described below, extra checks are
 performed. See :ref:`Python Debug Build <debug-build>` for more details.
 
-Defining :c:macro:`Py_TRACE_REFS` enables reference tracing
+Defining ``Py_TRACE_REFS`` enables reference tracing
 (see the :option:`configure --with-trace-refs option <--with-trace-refs>`).
 When defined, a circular doubly linked list of active objects is maintained by adding two extra
 fields to every :c:type:`PyObject`.  Total allocations are tracked as well.  Upon