fix codestyle

doc/DOCKER_IMAGES.md

@@ -25,7 +25,6 @@ You can get images in two ways:
 
 
 
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 ## Image description
 
 Runtime images cannot be used for compilation.
@@ -50,4 +49,3 @@ Running a CUDA container requires a machine with at least one CUDA-capable GPU a
 The machine running the CUDA container **only requires the NVIDIA driver**, the CUDA toolkit doesn't have to be installed.
 
 For the relationship between CUDA toolkit version, Driver version and GPU architecture, please refer to [nvidia-docker wiki](https://github.com/NVIDIA/nvidia-docker/wiki/CUDA).
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doc/DOCKER_IMAGES_CN.md

@@ -25,7 +25,6 @@
    
 
 
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 ## 镜像说明
 
 运行时镜像不能用于开发编译。