Update README.md

Author: jwyang

README.md

@@ -68,7 +68,7 @@ source | backbone | model | bs | lr | lr_decay | sgdet@20 | sgdet@50 | sgdet@100
 
 ### Scene Graph Generation (Step training)
 source | backbone | model | bs | lr | [email protected] | sgdet@20 | sgdet@50 | sgdet@100
--------|--------|--------|--------|:------:|:------:|:------:|:-------:|:-------:|:-------:
+-------|--------|--------|:------:|:------:|:------:|:-------:|:-------:|:-------:
 [this repo](https://drive.google.com/open?id=1EoAVYsvOk5narI6iIoyOBb8jXDS7Retf) | Res-101 | vanilla | 8 | 5e-3 | 24.2 | 10.5 | 13.8 | 16.1
 [this repo](https://drive.google.com/open?id=1tAJAhrq8EP86PZJYfwsjtQ-k1RJt1p7q) | Res-101 | imp | 8 | 5e-3 | 24.2 |16.7 | 21.7 | 25.2
 [motifnet](https://github.com/rowanz/neural-motifs) | VGG-16 | imp | -| - | - | - | 14.6 | 20.7 | 24.5