Update DeepImpact repro log
@@ -88,3 +88,4 @@ The final evaluation metric is very close to the one reported in the paper (0.32
+ Results reproduced by [@MXueguang](https://github.com/MXueguang) on 2021-06-17 (commit [`ff618db`](https://github.com/castorini/anserini/commit/ff618dbf87feee0ad75dc42c72a361c05984097d))
+ Results reproduced by [@JMMackenzie](https://github.com/jmmackenzie) on 2021-06-22 (commit [`490434`](https://github.com/castorini/anserini/commit/490434172a035b6eade8c17771aed83cc7f5d996))
++ Results reproduced by [@amyxie361](https://github.com/amyxie361) on 2021-06-22 (commit [`6f9352`](https://github.com/castorini/anserini/commit/6f9352fc5d6a4938fadc2bda9d0c428056eec5f0))
