Format inline code block. (pytorch#12441)

Summary:
Signed-off-by: Marcela Morales Quispe <[email protected]>
Pull Request resolved: pytorch#12441

Differential Revision: D10236743

Pulled By: SsnL

fbshipit-source-id: c0e446a81a388cf6a558bf7ab8ba0e59703dc169

Author: marcemq

README.md

@@ -210,7 +210,7 @@ python setup.py install
 
 ### Docker image
 
-Dockerfile is supplied to build images with cuda support and cudnn v7. You can pass -e PYTHON_VERSION=x.y flag to specificy which python to be used by Miniconda, or leave it unset to use the default. Build as usual
+Dockerfile is supplied to build images with cuda support and cudnn v7. You can pass `-e PYTHON_VERSION=x.y` flag to specificy which python to be used by Miniconda, or leave it unset to use the default. Build as usual
 ```
 docker build -t pytorch -f docker/pytorch/Dockerfile .
 ```