Update Install_EN.md

doc/Install_EN.md

@@ -61,7 +61,7 @@ pip3 install -r python/requirements.txt
 ```
 
 Install the service whl package. There are three types of client, app and server. The server is divided into CPU and GPU. Choose one installation according to the environment. 
-- post102 = CUDA10.2 + Cudnn7 + TensorRT6(Recommended)
+- post102 = CUDA10.2 + cuDNN7 + TensorRT6(Recommended)
 - post101 = CUDA10.1 + cuDNN7 + TensorRT6
 - post112 = CUDA11.2 + cuDNN8 + TensorRT8