Update 2020-7-20-pytorch-1.6-released.md

Author: brucejlin1

_posts/2020-7-20-pytorch-1.6-released.md

@@ -206,6 +206,7 @@ To reiterate, prototype features in PyTorch are early features that we are looki
 
 **Quantization Numerical Suite:** Quantization is good when it works, but it’s difficult to know what's wrong when it doesn't satisfy the expected accuracy. A prototype is now available for a Numerical Suite that measures comparison statistics between quantized modules and float modules. This is available to test using eager mode and on CPU only with more support coming. A tutorial on how to use this feature can be found [here](https://github.com/pytorch/tutorials/tree/master/prototype_source).
 
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 Cheers!
 Team PyTorch