doc/RCU/listRCU: Fix typos in a example code snippets

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

Documentation/RCU/listRCU.rst

@@ -226,7 +226,7 @@ need to be filled in)::
 		list_for_each_entry(e, list, list) {
 			if (!audit_compare_rule(rule, &e->rule)) {
 				e->rule.action = newaction;
-				e->rule.file_count = newfield_count;
+				e->rule.field_count = newfield_count;
 				write_unlock(&auditsc_lock);
 				return 0;
 			}
@@ -255,7 +255,7 @@ RCU (*read-copy update*) its name.  The RCU code is as follows::
 					return -ENOMEM;
 				audit_copy_rule(&ne->rule, &e->rule);
 				ne->rule.action = newaction;
-				ne->rule.file_count = newfield_count;
+				ne->rule.field_count = newfield_count;
 				list_replace_rcu(&e->list, &ne->list);
 				call_rcu(&e->rcu, audit_free_rule);
 				return 0;