Examples.voting-app: Fix typo.
### Initialize project
-In this example, we will create an app from the existing docker sample `example-voting-app`. First download, the project [here](https://github.com/dockersamples/example-voting-app).
+In this example, we will create an app from the existing docker sample `example-voting-app`. First download the project [here](https://github.com/dockersamples/example-voting-app).
Initialize the project using `docker-app init voting-app -c example-voting-app/docker-stack.yml`.
