Update previous-versions.md

Use CUDA 11.1 instead of CUDA 11.3 for PyTorch 1.8.1, 1.9.0, and 1.9.1.

Author: Tony-Y

_get_started/previous-versions.md

@@ -935,8 +935,8 @@ conda install pytorch==1.9.1 torchvision==0.10.1 torchaudio==0.9.1 -c pytorch
 # CUDA 10.2
 conda install pytorch==1.9.1 torchvision==0.10.1 torchaudio==0.9.1 cudatoolkit=10.2 -c pytorch
 
-# CUDA 11.3
-conda install pytorch==1.9.1 torchvision==0.10.1 torchaudio==0.9.1 cudatoolkit=11.3 -c pytorch -c conda-forge
+# CUDA 11.1
+conda install pytorch==1.9.1 torchvision==0.10.1 torchaudio==0.9.1 cudatoolkit=11.1 -c pytorch -c conda-forge
 
 # CPU Only
 conda install pytorch==1.9.1 torchvision==0.10.1 torchaudio==0.9.1 cpuonly -c pytorch
@@ -989,8 +989,8 @@ conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 -c pytorch
 # CUDA 10.2
 conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=10.2 -c pytorch
 
-# CUDA 11.3
-conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=11.3 -c pytorch -c conda-forge
+# CUDA 11.1
+conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cudatoolkit=11.1 -c pytorch -c conda-forge
 
 # CPU Only
 conda install pytorch==1.9.0 torchvision==0.10.0 torchaudio==0.9.0 cpuonly -c pytorch
@@ -1098,8 +1098,8 @@ conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 -c pytorch
 # CUDA 10.2
 conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=10.2 -c pytorch
 
-# CUDA 11.3
-conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=11.3 -c pytorch -c conda-forge
+# CUDA 11.1
+conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cudatoolkit=11.1 -c pytorch -c conda-forge
 
 # CPU Only
 conda install pytorch==1.8.1 torchvision==0.9.1 torchaudio==0.8.1 cpuonly -c pytorch