Update Doc/c-api/dict.rst

Co-authored-by: Victor Stinner <vstinner@python.org>

Author: sobolevn

Doc/c-api/dict.rst

@@ -473,10 +473,12 @@ Dictionary objects
 .. c:function:: int PyDict_Update(PyObject *a, PyObject *b)
 
    This is the same as ``PyDict_Merge(a, b, 1)`` in C.
-   Return ``0`` on success or ``-1`` if an exception was raised.
+   
    Similar to ``a.update(b)`` in Python except that :c:func:`PyDict_Update`
    doesn't fall back to the iterating over a sequence of key value pairs if the
    second argument has no "keys" attribute.
+   
+   Return ``0`` on success or ``-1`` if an exception was raised.
 
    .. note::