Update README.md

README.md

@@ -62,8 +62,8 @@ To run misskey:
 
 `sudo docker run --rm -i -t -p $PORT:80 -v $(pwd):/root/misskey -v $DBPATH:/data/db misskey`
 
-where $PORT is the port used to access Misskey Web from host browser
-and $DBPATH is the path of MongoDB database on the host for data persistence.
+where `$PORT` is the port used to access Misskey Web from host browser
+and `$DBPATH` is the path of MongoDB database on the host for data persistence.
 
 ex: `sudo docker run --rm -i -t -p 80:80 -v $(pwd):/root/misskey -v /data/db:/data/db misskey`
 
@@ -71,7 +71,7 @@ If you want to run misskey in production mode, add `--env NODE_ENV=production` l
 
 `sudo docker run --rm -i -t -p 80:80 -v $(pwd):/root/misskey -v /data/db:/data/db --env NODE_ENV=production misskey`
 
-Note that $(pwd) is the working directory.
+Note that `$(pwd)` is the working directory.
 
 ## Launch
 `sudo npm start`