Merge pull request #10198 from aabadie/pr/boards/wsn430_doc_fix

boards/wsn430*: fix doxygen grouping

boards/wsn430-v1_3b/doc.txt

 /**
 @defgroup    boards_wsn430-v1_3b WSN430 v1.3b
 @ingroup     boards
-@brief       Support for the WSN430 V1 Rev 3b
+@brief       Support for the Senslab WSN430 V1 Rev 3b
  */

boards/wsn430-v1_3b/include/board.h

@@ -7,8 +7,7 @@
  */
 
 /**
- * @defgroup    boards_wsn430-v1_3b WSN430 v1.3b
- * @ingroup     boards
+ * @ingroup     boards_wsn430-v1_3b
  * @brief       Support for the Senslab WSN430 v1.3b board
  *
  * @{

boards/wsn430-v1_4/doc.txt

 /**
 @defgroup    boards_wsn430-v1_4 WSN430 v1.4
 @ingroup     boards
-@brief       Support for the WSN430 V1 Rev 4
+@brief       Support for the Senslab WSN430 V1 Rev 4
  */

boards/wsn430-v1_4/include/board.h

@@ -7,8 +7,7 @@
  */
 
 /**
- * @defgroup    boards_wsn430-v1_4 WSN430 v1.4
- * @ingroup     boards
+ * @ingroup     boards_wsn430-v1_4
  * @brief       Support for the Senslab WSN430 v1.4 board
  *
  * @{