Update README.md

README.md

@@ -20,7 +20,7 @@ The code with simulator_old.py is tested with the following environment:
   - Scipy       1.6.0
   - Matplotlib  3.3.6
 
-**Update: we modify the code to work with pytorch 1.10 and beyond. Please use the latest simulator.py. Nothing else has changed. For pytorch 1.4, use simulator_old.py. The difference is due to the pytorch's update on the fft module. **
+**Update: we modify the code to work with pytorch 1.10 and beyond. Please use the latest simulator.py. Nothing else has changed. For pytorch 1.4, use simulator_old.py. The difference is due to the pytorch's update on the fft module.**
 
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