hotfix: typo

include/core/tree_manager/tree_manager_sliding_window.h

@@ -25,7 +25,7 @@ struct ParamsTreeManagerSlidingWindow : public ParamsTreeManagerBase
         {
             return  ParamsTreeManagerBase::print()                                            + "\n"
                         + "n_frames: "                  + std::to_string(n_frames)                  + "\n"
-                        + "fix_first_frame: "           + std::to_string(n_fix_first_frames)        + "\n"
+                        + "n_fix_first_frames: "        + std::to_string(n_fix_first_frames)        + "\n"
                         + "viral_remove_empty_parent: " + std::to_string(viral_remove_empty_parent) + "\n";
         }