Update InvSfM description in README.md

Author: hyojinie

README.md

@@ -139,8 +139,8 @@ ninjadesc/
 This codebase builds on a number of open-source projects:
 - **SOSNet** ([Tian et al., 2019](https://github.com/scape-research/SOSNet)) — base descriptor.
 - **HardNet** ([Mishchuk et al., 2017](https://github.com/DagnyT/hardnet)) — base descriptor.
-- **InvSfM** ([Pittaluga et al., 2021](https://github.com/francescopittaluga/invsfm)) **Mitigating Reverse Engineering Attacks on
-Local Feature Descriptors** ([dangwal et al., 2021](https://www.bmva-archive.org.uk/bmvc/2021/assets/papers/1603.pdf)) — descriptor inversion baseline.
+- **InvSfM** ([Pittaluga et al., 2021](https://github.com/francescopittaluga/invsfm)) — descriptor inversion baseline. Also, special thanks to **Mitigating Reverse Engineering Attacks on
+Local Feature Descriptors** ([dangwal et al., 2021](https://www.bmva-archive.org.uk/bmvc/2021/assets/papers/1603.pdf))
 - **MegaDepth** ([Li & Snavely, 2018](https://www.cs.cornell.edu/projects/megadepth/)) — adversarial training data.
 - **HPatches** ([Balntas et al., 2017](https://hpatches.github.io/)) — matching benchmark.
 - **PyTorch Lightning**, **Hydra**, **kornia**, **torchvision** — frameworks.