Add blanklines

Author: XuehaiPan

Doc/library/sys.rst

@@ -72,6 +72,7 @@ always available. Unless explicitly noted otherwise, all variables are read-only
       | ``hasattr(sys, 'abiflags')``          | ``not sys.platform.startswith('win')``                              |
       +---------------------------------------+---------------------------------------------------------------------+
 
+
 .. function:: addaudithook(hook)
 
    Append the callable *hook* to the list of active auditing hooks for the

Python/sysmodule.c

@@ -966,6 +966,7 @@ sys_exit_impl(PyObject *module, PyObject *status)
     return NULL;
 }
 
+
 // This function is used to warn about the future change of sys.abiflags
 // from absent to a meaningful value on all platforms.
 // It can be removed when the change is made.