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 <unicorn_wang@outlook.com>

* 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 <unicorn_wang@outlook.com>

---------

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>

src/clock.c

@@ -37,7 +37,7 @@ static volatile rt_atomic_t rt_tick = 0;
 static void (*rt_tick_hook)(void);
 
 /**
- * @addtogroup Hook
+ * @addtogroup group_Hook
  */
 
 /**@{*/
@@ -56,7 +56,7 @@ void rt_tick_sethook(void (*hook)(void))
 #endif /* RT_USING_HOOK */
 
 /**
- * @addtogroup Clock
+ * @addtogroup group_Clock
  */
 
 /**@{*/