[3.12] Fix a typo in syslog's error message (GH-129029) (#129050)

Fix a typo in `syslog`'s error message (GH-129029)
(cherry picked from commit 9b1c181)

Co-authored-by: Tomas R <tomas.roun8@gmail.com>

Modules/syslogmodule.c

@@ -250,7 +250,7 @@ syslog_closelog_impl(PyObject *module)
     // Since the sys.closelog changes the process level state of syslog library,
     // this operation is only allowed for the main interpreter.
     if (!is_main_interpreter()) {
-        PyErr_SetString(PyExc_RuntimeError, "sunbinterpreter can't use syslog.closelog()");
+        PyErr_SetString(PyExc_RuntimeError, "subinterpreter can't use syslog.closelog()");
         return NULL;
     }