fix:fix comment and useless string

Fix comment for api document building.
Remove the meanless string in the code.

Doxyfile

@@ -38,7 +38,7 @@ PROJECT_NAME           = "DJI Onboard SDK"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.0.1
+PROJECT_NUMBER         = 4.1.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

osdk-core/api/inc/dji_telemetry.hpp

@@ -335,12 +335,19 @@ typedef struct PositionData
   float32_t HFSL;      /*!< height above mean sea level (m) */
 } PositionData;        // pack(1)
 
+
+/*!
+ * @brief struct for TOPIC_HOME_POINT_INFO
+ */
 typedef struct HomeLocationData
 {
   float64_t latitude;  /*!< unit: rad */
   float64_t longitude; /*!< unit: rad */
 }HomeLocationData; // pack(1)
 
+/*!
+ * @brief struct for TOPIC_HOME_POINT_SET_STATUS
+ */
 typedef struct HomeLocationSetStatus
 {
   uint8_t status;     /*!<0:fail, 1:success*/
@@ -693,11 +700,17 @@ typedef struct GimbalSingleData
 #define SDK_M210_GIMBAL_MAX_NUM 2
 #define SDK_M300_GIMBAL_MAX_NUM 3
 
+/*!
+ * @brief struct for TOPIC_DUAL_GIMBAL_DATA
+ */
 typedef struct GimbalDualData
 {
   GimbalSingleData gbData[SDK_M210_GIMBAL_MAX_NUM];
 } GimbalDualData;
 
+/*!
+ * @brief struct for TOPIC_THREE_GIMBAL_DATA
+ */
 typedef struct GimbalThreeData
 {
   GimbalSingleData gbData[SDK_M300_GIMBAL_MAX_NUM];