fixup - rename recon

mantidimaging/gui/windows/recon/presenter.py

@@ -291,7 +291,7 @@ def _on_stack_reconstruct_slice_done(self, task: TaskWorkerThread):
                 assert self.model.images is not None
                 filter_name = self.view.recon_params().filter_name
                 algorithm_name = self.view.recon_params().algorithm
-                images.name = f"Recon_Slice{algorithm_name}"
+                images.name = f"Recon_Slice_{algorithm_name}"
                 images.name = f"{images.name}_{filter_name}" if filter_name else images.name
                 self._replace_inf_nan(images)  # pyqtgraph workaround
                 self.view.show_recon_volume(images, self.model.stack_id)