fix code block in installation guide
@@ -128,7 +128,7 @@ However, if for any reason you need to force-install a particular CUDA version (
.. note::
- cuDNN, cuTENSOR, and NCCL are available on ``conda-forge`` as optional dependencies. The following command can install them all at once:
+ cuDNN, cuTENSOR, and NCCL are available on ``conda-forge`` as optional dependencies. The following command can install them all at once::
$ conda install -c conda-forge cupy cudatoolkit=10.1 cudnn cutensor nccl
