doxygen: Fix some warnings

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>

cpu/stm32w108/hal/error-def.h

@@ -486,7 +486,7 @@ DEFINE_ERROR(ERR_FLASH_VERIFY_FAILED, 0x47)
 
 #ifdef DOXYGEN_SHOULD_SKIP_THIS
 /** 
- * @description A fatal error has occured while trying to write data to the
+ * @brief A fatal error has occured while trying to write data to the
  * flash, possibly due to write protection or an invalid address.  The data in
  * the flash cannot be trusted after this error, and it is possible this error
  * is the result of exceeding the life cycles of the flash.
@@ -499,7 +499,7 @@ DEFINE_ERROR(ERR_FLASH_PROG_FAIL, 0x4B)
 
 #ifdef DOXYGEN_SHOULD_SKIP_THIS
 /** 
- * @description A fatal error has occured while trying to erase flash, possibly
+ * @brief A fatal error has occured while trying to erase flash, possibly
  * due to write protection.  The data in the flash cannot be trusted after
  * this error, and it is possible this error is the result of exceeding the
  * life cycles of the flash.
@@ -1274,7 +1274,9 @@ DEFINE_ERROR( APPLICATION_ERROR_14, 0xFE)
 DEFINE_ERROR( APPLICATION_ERROR_15, 0xFF)
 #endif //DOXYGEN_SHOULD_SKIP_THIS
 
-/** @} */ // END name group
+/** @} */
+
+/** @} END defgroup */
 
 /** @} END addtogroup */
 

cpu/stm32w108/hal/micro/cortexm3/compiler/gnu.h

@@ -7,7 +7,7 @@
  * @addtogroup stm32w-cpu
  * @{ */
 
-/** @defgroup gnu
+/** @defgroup gnu GNU
  * @brief Compiler and Platform specific definitions and typedefs for the
  *  GNU C ARM compiler.
  *

cpu/stm32w108/hal/micro/cortexm3/compiler/iar.h

@@ -8,7 +8,7 @@
  * @addtogroup stm32w-cpu
  * @{ */
 
-/** @defgroup iar
+/** @defgroup iar IAR
  * @brief Compiler and Platform specific definitions and typedefs for the
  *  IAR ARM C compiler.
  *

cpu/stm32w108/hal/micro/micro-common.h

@@ -9,7 +9,7 @@
  * @addtogroup stm32w-cpu
  * @{ */
 
-/** @defgroup micro
+/** @defgroup micro Micro
  * Many of the supplied example applications use these microcontroller functions.
  * See hal/micro/micro-common.h for source code.
  *