Update ctypes.rst

Author: corona10

Doc/library/ctypes.rst

@@ -882,7 +882,7 @@ invalid non-\ ``NULL`` pointers would crash Python)::
 Thread safety without the GIL
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-In Python 3.13, the :term:`GIL` may be disabled on :term:`experimental free threaded <free threading>` builds.
+From Python 3.13, the :term:`GIL` can be disabled on :term:`free threaded <free threading>` builds.
 In ctypes, reads and writes to a single object concurrently is safe, but not across multiple objects:
 
    .. code-block:: pycon