tracing: Trivia spelling fix containerof() -> container_of()

This is the only location on kernel that has wrong spelling
of the container_of() helper. Fix it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

kernel/trace/trace_printk.c

@@ -115,7 +115,7 @@ static int module_trace_bprintk_format_notify(struct notifier_block *self,
  * section, then we need to read the link list pointers. The trick is
  * we pass the address of the string to the seq function just like
  * we do for the kernel core formats. To get back the structure that
- * holds the format, we simply use containerof() and then go to the
+ * holds the format, we simply use container_of() and then go to the
  * next format in the list.
  */
 static const char **