Changed comma to period to correct grammar error.

doc/install/prod-ubuntu.md

@@ -31,7 +31,7 @@
   * ``` wget https://github.com/mattermost/platform/releases/download/v1.0.0/mattermost.tar.gz```
 1. Unzip the Mattermost Server by typing:
   * ``` tar -xvzf mattermost.tar.gz```
-1. For the sake of making this guide simple we located the files at `/home/ubuntu/mattermost`, in the future we will give guidance for storing under `/opt`.
+1. For the sake of making this guide simple we located the files at `/home/ubuntu/mattermost`. In the future we will give guidance for storing under `/opt`.
 1. We have also elected to run the Mattermost Server as the `ubuntu` account for simplicity.  We recommend settings up and running the service under a `mattermost` user account with limited permissions.
 1. Create the storage directory for files.  We assume you will have attached a large drive for storage of images and files.  For this setup we will assume the directory is located at `/mattermost/data`.
   * Create the directory by typing: