Rename pytorch-quantum to torchquantum (#711)

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### Summary

The project has since renamed itself

ecosystem/resources/members/pytorch-quantum.toml → ecosystem/resources/members/torchquantum.toml

@@ -1,5 +1,5 @@
-name = "pytorch-quantum"
-url = "https://github.com/mit-han-lab/pytorch-quantum"
+name = "TorchQuantum"
+url = "https://github.com/mit-han-lab/torchquantum"
 description = "A PyTorch-centric hybrid classical-quantum dynamic neural networks framework."
 licence = "Apache 2.0"
 labels = [ "Machine learning",]