Update _getting-started/index.md

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

Author: mlachkar

_getting-started/index.md

@@ -25,7 +25,7 @@ The Scala installer is a tool named `cs` that ensures that a JVM and standard Sc
 </div>
 
 
-Along with managing JVMs, it also install useful command-line tools: 
+Along with managing JVMs, it also installs useful command line tools: 
 ammonite, coursier, scala, scalac, sbt-launcher, scalafmt.
 
 For more information, read [couriser-cli documentation](https://get-coursier.io/docs/cli-overview)
@@ -124,4 +124,4 @@ There are a multitude of mailing lists and real-time chat channels in case you w
 
 <div style="display:none" id="stepOne-windows">
     <p>Download and execute <a href="https://git.io/coursier-cli-windows-exe">the Scala installer for Windows</a> based on coursier</p>
-</div>
+</div>