Add descriptions to avoid build issues (#619)

Co-authored-by: Rosty Geyyer <rosty.geyyer@amd.com>

include/ck/tensor_operation/gpu/block/blockwise_softmax.hpp

@@ -15,12 +15,12 @@ namespace ck {
 /**
  * @brief Blockwise softmax
  *
- * @tparam BlockSize
- * @tparam AccDataType
- * @tparam ThreadMap_M_K
- * @tparam ThreadClusterDesc_M_K
- * @tparam ThreadSliceDesc_M_K
- * @tparam IgnoreNaN
+ * @tparam BlockSize Block size
+ * @tparam AccDataType Accumulator data type
+ * @tparam ThreadMap_M_K Thread id to m_k
+ * @tparam ThreadClusterDesc_M_K Threadwise cluster descriptor
+ * @tparam ThreadSliceDesc_M_K Threadwise slices descriptor
+ * @tparam IgnoreNaN Flag to ignore NaN, false by default
  */
 template <index_t BlockSize,
           typename AccDataType,