add paper link

app.py

@@ -86,7 +86,10 @@ def build_grid_and_display(str_grid):
     test_x = build_tensor_out_of_grid(str_grid)
     return test_x, display_as_dataframe(test_x)
 st.markdown('# Deep learning sudoku Solver')
-st.markdown('### Author: Sébastien Guissart')
+st.markdown('''### Author: Sébastien Guissart
+
+Detailed method in this [paper](https://huggingface.co/spaces/SebastienGuissart/deeplearning_sudoku_solver/blob/main/100%25%20accurate%20Sudoku%20solving%20with%20deep%20learning%20algorithm.pdf)
+            ''')
 
 option = st.selectbox(
     "select template grids",