[Miosix] Updated submodule

miosix-kernel @ 8f9f992e

-Subproject commit e2eb4765edab6108b053ab1e60dd058be264d3e7
+Subproject commit 8f9f992e671bd279f18e3f9e2568ee0156eb8c88

src/shared/diagnostic/CpuMeter.h

@@ -40,7 +40,7 @@ namespace Boardcore
  * idle thread from running and thus it prevents the CPU from going into deep
  * sleep.
  *
- * NOTE: for this to work, no other thread with the lowest priority has to be
+ * NOTE: For this to work, no other thread with the lowest priority has to be
  * created, otherwise its time will not be accounted.
  */