doxygen: add prefix for groups (#9991)

* doxygen: add prefix for groups

Add "group_" prefix to doxygen group names. This makes
it easier to grep with group name later.

This patch only modifies the groups defined in the pathes
of INPUT of documentation/Doxyfile:

INPUT = . \
        ../src \
        ../include \
        ../components/finsh \
        ../components/drivers/include/drivers \
        ../components/drivers/clk \
        ../components/dfs/dfs_v2/src \
        ../components/dfs/dfs_v2/include

Other groups are not touched.

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

* ci: fixed error report when run file_check.py

Such as:
- "please delete extra space at the end of this line."
- "the RT-Thread error code should return negative value. e.g. return
  -RT_ERROR"

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

---------

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

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mem.c b/src/mem.c
index 26cba6d404..c7a33ca198 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -254,7 +254,7 @@ rt_err_t rt_smem_detach(rt_smem_t m)
 RTM_EXPORT(rt_smem_detach);
 
 /**
- * @addtogroup MM
+ * @addtogroup group_MM
  */
 
 /**@{*/