Fix lines starting with spaces

ICSharpCode.Decompiler.Tests/TestCases/Pretty/AsyncMain.cs

@@ -4,11 +4,11 @@ using System.Threading.Tasks;
 namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 {
 	public class AsyncMain
-    {
+	{
 		public static async Task Main(string[] args)
 		{
 			await Task.Delay(1000);
 			Console.WriteLine("Hello Wolrd!");
 		}
-    }
+	}
 }