zephyr/modzephyr: Fix typo in identifier.

zephyr/modzephyr.c

@@ -37,7 +37,7 @@ STATIC mp_obj_t mod_is_preempt_thread(void) {
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_is_preempt_thread_obj, mod_is_preempt_thread);
 
 STATIC const mp_rom_map_elem_t mp_module_time_globals_table[] = {
-    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_zephy) },
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_zephyr) },
     { MP_ROM_QSTR(MP_QSTR_is_preempt_thread), MP_ROM_PTR(&mod_is_preempt_thread_obj) },
 };