108: Make pretty

exercises/108_labeled_switch.zig

@@ -19,7 +19,7 @@
 //              }
 //              break;
 //          }
-//      std.debug.print("This statement cannot be reached\n", .{});
+//          std.debug.print("This statement cannot be reached\n", .{});
 //      }
 //
 // By combining all we've learned so far, we can now proceed with a labeled switch