message: fixed some documentation issues
diff: @@ -4713,8 +4713,8 @@ rocsparse_status rocsparse_znnz(rocsparse_handle handle,
  * \retval rocsparse_status_invalid_size \p m or \p n or \p lda is invalid.
  * \retval rocsparse_status_invalid_pointer \p A or \p nnzPerRow or \p csrValA \p csrRowPtrA or \p csrColIndA
  * pointer is invalid.
  - * \endcode
  */
  +/**@{*/
  ROCSPARSE_EXPORT
  rocsparse_status rocsparse_sdense2csr(rocsparse_handle handle,
  rocsparse_int m,
  @@ -4761,6 +4761,7 @@ rocsparse_status rocsparse_zdense2csr(rocsparse_handle handle,
  rocsparse_double_complex* csrValA,
  rocsparse_int* csrRowPtrA,
  rocsparse_int* csrColIndA);
  +/**@}*/
  /*! \ingroup conv_module
  * \brief
  @@ -4806,8 +4807,8 @@ rocsparse_status rocsparse_zdense2csr(rocsparse_handle handle,
  * \retval rocsparse_status_invalid_size \p m or \p n or \p lda is invalid.
  * \retval rocsparse_status_invalid_pointer \p A or \p nnzPerCol or \p cscValA \p cscColPtrA or \p cscColIndA
  * pointer is invalid.
  - * \endcode
  */
  +/**@{*/
  ROCSPARSE_EXPORT
  rocsparse_status rocsparse_sdense2csc(rocsparse_handle handle,
  rocsparse_int m,
  @@ -4854,6 +4855,7 @@ rocsparse_status rocsparse_zdense2csc(rocsparse_handle handle,
  rocsparse_double_complex* cscValA,
  rocsparse_int* cscColPtrA,
  rocsparse_int* cscRowIndA);
  +/**@}*/
  /*! \ingroup conv_module
  * \brief Convert a sparse CSR matrix into a sparse COO matrix
  