Clarify what primitives means.

editor/plugins/node_3d_editor_plugin.cpp

@@ -2564,7 +2564,7 @@ void Node3DEditorViewport::_notification(int p_what) {
 
 				text += "\n";
 				text += vformat(TTR("Objects: %d\n"), viewport->get_render_info(Viewport::RENDER_INFO_TYPE_VISIBLE, Viewport::RENDER_INFO_OBJECTS_IN_FRAME));
-				text += vformat(TTR("Primitives: %d\n"), viewport->get_render_info(Viewport::RENDER_INFO_TYPE_VISIBLE, Viewport::RENDER_INFO_PRIMITIVES_IN_FRAME));
+				text += vformat(TTR("Primitive Indices: %d\n"), viewport->get_render_info(Viewport::RENDER_INFO_TYPE_VISIBLE, Viewport::RENDER_INFO_PRIMITIVES_IN_FRAME));
 				text += vformat(TTR("Draw Calls: %d"), viewport->get_render_info(Viewport::RENDER_INFO_TYPE_VISIBLE, Viewport::RENDER_INFO_DRAW_CALLS_IN_FRAME));
 
 				info_label->set_text(text);