Add mmrotate link in README.md (#1733)

* Add mmrotate link in README.md

* Add mmrotate link in docs

* fix isort

README.md

@@ -50,6 +50,7 @@ research projects as below:
 - [MMSelfSup](https://github.com/open-mmlab/mmselfsup): OpenMMLab self-supervised learning Toolbox and Benchmark.
 - [MMRazor](https://github.com/open-mmlab/mmrazor): OpenMMLab Model Compression Toolbox and Benchmark.
 - [MMDeploy](https://github.com/open-mmlab/mmdeploy): OpenMMLab Model Deployment Framework.
+- [MMRotate](https://github.com/open-mmlab/mmrotate): OpenMMLab rotated object detection toolbox and benchmark.
 
 It provides the following functionalities.
 

README_zh-CN.md

@@ -49,6 +49,7 @@ MMCV 是一个面向计算机视觉的基础库，它支持了很多开源项目
 - [MMSelfSup](https://github.com/open-mmlab/mmselfsup): OpenMMLab 自监督学习工具箱与测试基准
 - [MMRazor](https://github.com/open-mmlab/mmrazor): OpenMMLab 模型压缩工具箱与测试基准
 - [MMDeploy](https://github.com/open-mmlab/mmdeploy): OpenMMLab 模型部署框架
+- [MMRotate](https://github.com/open-mmlab/mmrotate): OpenMMLab 旋转框检测工具箱与测试基准
 
 MMCV 提供了如下众多功能：
 

docs/en/get_started/introduction.md

@@ -20,6 +20,7 @@ research projects as below:
 - [MMSelfSup](https://github.com/open-mmlab/mmselfsup): OpenMMLab self-supervised learning Toolbox and Benchmark.
 - [MMRazor](https://github.com/open-mmlab/mmrazor): OpenMMLab Model Compression Toolbox and Benchmark.
 - [MMDeploy](https://github.com/open-mmlab/mmdeploy): OpenMMLab Model Deployment Framework.
+- [MMRotate](https://github.com/open-mmlab/mmrotate): OpenMMLab rotated object detection toolbox and benchmark.
 
 It provides the following functionalities.
 

docs/zh_cn/get_started/introduction.md

@@ -19,6 +19,7 @@ MMCV 是一个面向计算机视觉的基础库，它支持了很多开源项目
 - [MMSelfSup](https://github.com/open-mmlab/mmselfsup): OpenMMLab 自监督学习工具箱与测试基准
 - [MMRazor](https://github.com/open-mmlab/mmrazor): OpenMMLab 模型压缩工具箱与测试基准
 - [MMDeploy](https://github.com/open-mmlab/mmdeploy): OpenMMLab 模型部署框架
+- [MMRotate](https://github.com/open-mmlab/mmrotate): OpenMMLab 旋转框检测工具箱与测试基准
 
 MMCV 提供了如下众多功能：
 

tests/test_ops/test_roi_align_rotated.py

@@ -80,7 +80,7 @@ def _test_roialign_rotated_allclose(device, dtype):
     if not torch.cuda.is_available() and device == 'cuda':
         pytest.skip('unittest does not support GPU yet.')
     try:
-        from mmcv.ops import roi_align_rotated, RoIAlignRotated
+        from mmcv.ops import RoIAlignRotated, roi_align_rotated
     except ModuleNotFoundError:
         pytest.skip('test requires compilation')
     pool_h = 2