cpuidle: Fix typos

Signed-off-by: Len Brown <len.brown@intel.com>

drivers/cpuidle/governors/menu.c

@@ -80,7 +80,7 @@
  * Limiting Performance Impact
  * ---------------------------
  * C states, especially those with large exit latencies, can have a real
- * noticable impact on workloads, which is not acceptable for most sysadmins,
+ * noticeable impact on workloads, which is not acceptable for most sysadmins,
  * and in addition, less performance has a power price of its own.
  *
  * As a general rule of thumb, menu assumes that the following heuristic