Update _getting-started/index.md

Co-Authored-By: Philippus Baalman <philippus@gmail.com>

Author: mlachkar

_getting-started/index.md

@@ -70,7 +70,7 @@ You can skip the rest of this page and go directly to [Building a Scala Project
 
 
 ## Open hello-world project
-### Using Intellij
+### Using IntelliJ
 1. Download and install [IntelliJ Community Edition](https://www.jetbrains.com/idea/download/)
 1. Install Scala plugin by following [the instructions on how to install IntelliJ plugins](https://www.jetbrains.com/help/idea/managing-plugins.html)
 1. Open the `build.sbt` file then choose *Open as a project*