Update README.md

Link to details in #7

Thanks @louislelay for asking about this.

Author: stephane-caron

README.md

@@ -145,7 +145,7 @@ A curated list of awesome robot descriptions in URDF, Xacro or MJCF formats.
 | iCub | IIT | [URDF](https://github.com/robotology/icub-models/tree/master/iCub) | CC-BY-SA-4.0 | ✔️ | ✔️ | ✔️ |
 | JAXON | JSK | [COLLADA](https://github.com/stephane-caron/openrave_models/tree/master/JAXON), [URDF](https://github.com/robot-descriptions/jaxon_description), [VRML](https://github.com/start-jsk/rtmros_choreonoid/tree/master/jvrc_models/JAXON_JVRC) | CC-BY-SA-4.0 | ✔️ | ✔️ | ✔️ |
 | JVRC-1 | AIST | [MJCF](https://github.com/isri-aist/jvrc_mj_description/), [URDF](https://github.com/stephane-caron/jvrc_description) | BSD-2-Clause | ✔️ | ✔️ | ✔️ |
-| NAO | SoftBank Robotics | [URDF](https://github.com/ros-naoqi/nao_robot/tree/master/nao_description/urdf/naoV50_generated_urdf), [Xacro](https://github.com/ros-naoqi/nao_robot/tree/master/nao_description/) | BSD-3-Clause | [:heavy_minus_sign:](https://github.com/ros-naoqi/nao_meshes#readme) | ✔️ | ✔️ |
+| NAO | SoftBank Robotics | [URDF](https://github.com/ros-naoqi/nao_robot/tree/master/nao_description/urdf/naoV50_generated_urdf), [Xacro](https://github.com/ros-naoqi/nao_robot/tree/master/nao_description/) | BSD-3-Clause | [:heavy_minus_sign:](https://github.com/ros-naoqi/nao_meshes#readme) ([?](https://github.com/robot-descriptions/awesome-robot-descriptions/issues/7)) | ✔️ | ✔️ |
 | Robonaut 2 | NASA JSC Robotics | [URDF](https://github.com/gkjohnson/nasa-urdf-robots/tree/master/r2_description) | NASA-1.3 | ✔️ | ✔️ | ✔️ |
 | Romeo | Aldebaran Robotics | [URDF](https://github.com/ros-aldebaran/romeo_robot/tree/master/romeo_description) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
 | SigmaBan | Rhoban | [URDF](https://github.com/Rhoban/sigmaban_urdf) | MIT | ✔️ | ✔️ | ✔️ |