fix fcos readme typo (#2869)

configs/fcos/README.md

@@ -16,7 +16,7 @@
 | Backbone  | Style   | GN      | MS train | Lr schd | Mem (GB) | Inf time (fps) | box AP | Download |
 |:---------:|:-------:|:-------:|:--------:|:-------:|:--------:|:--------------:|:------:|:--------:|
 | R-50      | caffe   | N       | N        | 1x      | 5.2      | 22.9           | 36.2   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_4x4_1x_coco/fcos_r50_caffe_fpn_1x_4gpu_20200218-c229552f.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_4x4_1x_coco/20200224_230410.log.json) |
-| R-50      | caffe   | Y       | N        | 1x      | 6.5      | 22.7           | 38.8   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_1x_coco/fcos_r50_caffe_fpn_gn_1x_4gpu_20200218-7831950c.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_1x_coco/20200130_004230.log.json) |
+| R-50      | caffe   | Y       | N        | 1x      | 6.5      | 22.7           | 36.6   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_1x_coco/fcos_r50_caffe_fpn_gn_1x_4gpu_20200218-7831950c.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_1x_coco/20200130_004230.log.json) |
 | R-50      | caffe   | Y       | N        | 2x      | -        | -              | 36.9   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_2x_coco/fcos_r50_caffe_fpn_gn_2x_4gpu_20200218-8ceb5c76.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r50_caffe_fpn_gn-head_4x4_2x_coco/20200130_004232.log.json) |
 | R-101     | caffe   | Y       | N        | 1x      | 10.2     | 17.3           | 39.2   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r101_caffe_fpn_gn-head_4x4_1x_coco/fcos_r101_caffe_fpn_gn_1x_4gpu_20200218-13e2cc55.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r101_caffe_fpn_gn-head_4x4_1x_coco/20200130_004231.log.json) |
 | R-101     | caffe   | Y       | N        | 2x      | -        | -              | 39.1   | [model](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r101_caffe_fpn_gn-head_4x4_2x_coco/fcos_r101_caffe_fpn_gn_2x_4gpu_20200218-d2261033.pth) | [log](https://open-mmlab.s3.ap-northeast-2.amazonaws.com/mmdetection/v2.0/fcos/fcos_r101_caffe_fpn_gn-head_4x4_2x_coco/20200130_004231.log.json) |