add @Class to DeviceGrid doxygen comment

Author: soheilshahrouz

libs/libarchfpga/src/device_grid.h

@@ -19,8 +19,12 @@ struct t_grid_tile {
     const t_metadata_dict* meta = nullptr;
 };
 
-///@brief DeviceGrid represents the FPGA fabric. It is used to get information about different layers and tiles.
-// TODO: All of the function that use helper functions of this class should pass the layer_num to the functions, and the default value of layer_num should be deleted eventually.
+/**
+ * @class DeviceGrid
+ * @brief Represents the FPGA fabric. It is used to get information about different layers and tiles.
+ *
+ * TODO: All of the functions that use helper functions of this class should pass the layer_num to the functions, and the default value of layer_num should be deleted eventually.
+ */
 class DeviceGrid {
   public:
     DeviceGrid() = default;