fix double spaces

Author: seb3s

guides/getting_started.md

@@ -22,7 +22,7 @@ mix archive.install hex scenic_new
 ## Build the Basic App
 
 First, navigate the command-line to the directory where you want to create your
-new Scenic app. Then run the following commands:  (change `my_app` to the name
+new Scenic app. Then run the following commands: (change `my_app` to the name
 of your app...)
 
 ```bash
@@ -36,7 +36,7 @@ If you want to explore the more full-on example, then follow the instructions be
 ## Build the Example App
 
 First, navigate the command-line to the directory where you want to create your
-new Scenic app. Then run the following commands:  (change `my_app` to the name
+new Scenic app. Then run the following commands: (change `my_app` to the name
 of your app...)
 
 ```bash