toto: reformat test module

compiler/toto.mod

@@ -3,6 +3,7 @@ MODULE toto;
 FROM TestIO IMPORT WriteString, WriteLn;
 
 BEGIN
- WriteString("Hello world, I'm coming to life!");
-WriteLn;
+    WriteString("Hello world, I'm coming to life!");
+    WriteLn;
 END toto.
+