Clarify the OpenStreetMap license

LICENSE

@@ -1 +1 @@
-The MGL dataset is made available under the CC-BY-SA license following the data available on the Mapillary platform. The model implementation and the pre-trained weights follow a CC-BY-NC license. OpenStreetMap data follows its own license.
+The MGL dataset is made available under the CC-BY-SA license following the data available on the Mapillary platform. The model implementation and the pre-trained weights follow a CC-BY-NC license. OpenStreetMap data is licensed under the Open Data Commons Open Database License (ODbL).

README.md

@@ -203,7 +203,7 @@ To make sure that the results are consistent over time, we used OSM data downloa
 
 ## License
 
-The MGL dataset is made available under the [CC-BY-SA](https://creativecommons.org/licenses/by-sa/4.0/) license following the data available on the Mapillary platform. The model implementation and the pre-trained weights follow a [CC-BY-NC](https://creativecommons.org/licenses/by-nc/2.0/) license. Keep in mind that OpenStreetMap [follows a different license](https://www.openstreetmap.org/copyright).
+The MGL dataset is made available under the [CC-BY-SA](https://creativecommons.org/licenses/by-sa/4.0/) license following the data available on the Mapillary platform. The model implementation and the pre-trained weights follow a [CC-BY-NC](https://creativecommons.org/licenses/by-nc/2.0/) license. [OpenStreetMap data](https://www.openstreetmap.org/copyright) is licensed under the [Open Data Commons Open Database License](https://opendatacommons.org/licenses/odbl/).
 
 ## BibTex citation