Update README.md

README.md

@@ -9,7 +9,7 @@ https://arxiv.org/abs/2107.11627
 
 How to use: 
   - Check the demo.py file
-  - The generation of correlation matrix for point spread functions is slow. We have prepared a few correlation matrix with different correlation strength for you to download at _____________________________
+  - The generation of correlation matrix for point spread functions is slow. You can download the correlation matrices prepared by us and put them under the data folder. The correlation matrices are available at __________________. 
 
 If you find our work helpful in your research, please consider cite our paper