tracing: Fix spelling mistake "preapre" -> "prepare"

There is a spelling mistake in the trace text. Fix it.

Link: https://lkml.kernel.org/r/20220928215828.66325-1-colin.i.king@gmail.comSigned-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

kernel/trace/trace.c

@@ -10157,7 +10157,7 @@ __init static int tracer_alloc_buffers(void)
 	 * buffer. The memory will be removed once the "instance" is removed.
 	 */
 	ret = cpuhp_setup_state_multi(CPUHP_TRACE_RB_PREPARE,
-				      "trace/RB:preapre", trace_rb_cpu_prepare,
+				      "trace/RB:prepare", trace_rb_cpu_prepare,
 				      NULL);
 	if (ret < 0)
 		goto out_free_cpumask;