Update README.md

README.md

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 sdk: gradio
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 # Convolutional Hough Matching Networks
 
-A demo for Convolutional Hough Matching Networks. [[Paper](https://arxiv.org/abs/2109.05221)] [[Official Github Repo](https://github.com/juhongm999/chm.git)]
+A demo for Convolutional Hough Matching Networks. [[Paper](https://arxiv.org/abs/2109.05221)] [[Official Github Repo](https://github.com/juhongm999/chm.git)]