Update metainfo.json

metainfo.json

@@ -11,6 +11,7 @@
   "url": "https://gitlab.mpcdf.mpg.de/nomad-lab/analytics-tetradymite-PRM2020",
   "link": "https://analytics-toolkit.nomad-coe.eu/hub/user-redirect/notebooks/tutorials/tetradymite_PRM2020.ipynb",
   "link_public": "https://analytics-toolkit.nomad-coe.eu/public/user-redirect/notebooks/tutorials/tetradymite_PRM2020.ipynb",
+  "link_paper": "https://th.fhi.mpg.de/site/uploads/Publications/PhysRevMaterials.4.034204.pdf",
   "updated": "2020-12-09",
   "flags":{
     "featured": true,