Fix doxygen documentation for iHandle2GUID (#5951) (#5965)

(cherry picked from commit 52b897e)

Signed-off-by: Barry Xu <[email protected]>
Co-authored-by: Barry Xu <[email protected]>

Author: mergify[bot]

include/fastdds/rtps/common/InstanceHandle.hpp

@@ -256,8 +256,8 @@ inline void iHandle2GUID(
 }
 
 /**
- * Convert GUID to InstanceHandle_t
- * @param ihandle InstanceHandle_t to store the results
+ * Convert InstanceHandle_t to GUID
+ * @param ihandle InstanceHandle_t to copy
  * @return GUID_t
  */
 inline GUID_t iHandle2GUID(