ReverseEngineering: Issue #0004473: Expose openCommand() to translation

Continuing the work to expose the undo/redo functionality to translation. This commit does so for the ReverseEngineering Wb.  
Ticket: https://tracker.freecadweb.org/view.php?id=4473

src/Mod/ReverseEngineering/Gui/SegmentationManual.cpp

@@ -231,7 +231,7 @@ void SegmentationManual::createSegment()
         return;
     // delete all selected faces
     App::Document* adoc = gdoc->getDocument();
-    gdoc->openCommand("Segmentation");
+    gdoc->openCommand(QT_TRANSLATE_NOOP("Command", "Segmentation"));
 
     std::vector<Mesh::Feature*> meshes = adoc->getObjectsOfType<Mesh::Feature>();
     bool selected = false;