Update installation.md

Author: thomhurst

docs/docs/getting-started/installation.md

@@ -5,6 +5,7 @@
 Assuming you have the .NET SDK installed, simply run:
 
 `dotnet new install TUnit.Templates`
+
 `dotnet new TUnit -n "YourProjectName"`
 
 A new test project will be created for you with some samples of different test types and tips. When you're ready to get going, delete them and create your own!