doxygen: re-org module groups (#10197)

Match the organization of modules (groups) with
that of user guide.

Preliminary arrangement. This patch is just a
framework arrangement. Details need to be continued.

P.S., in this patch, adding numerical prefixes to
the files in documentation/0.doxygen is to meet the
need of displaying sorting in HTML pages.

Signed-off-by: Chen Wang <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/irq.c b/src/irq.c
index 27bc555b75..467bfaaefd 100644
--- a/src/irq.c
+++ b/src/irq.c
@@ -59,7 +59,7 @@ void rt_interrupt_leave_sethook(void (*hook)(void))
 #endif /* RT_USING_HOOK */
 
 /**
- * @addtogroup group_Kernel
+ * @addtogroup group_kernel_core
  */
 
 /**@{*/