Added more previews

_bibliography/publications.bib

@@ -46,7 +46,7 @@ @inproceedings{NADS:WCXSAE:2022
   author    = {Simone Benatti and Chris Schwarz and Aaron Young and Asher Elmquist and Radu Serban and Dan Negrut},
   title     = {{A Geographically Distributed Simulation Framework for the Analysis of Mixed Traffic Scnearios Involving Conventional and Autonomous Vehicles}},
   year      = {2022},
-  booktitle = {{SAE World Congress Experience - Occupant. Protection: Safety Test and Simulation Methods and Applications}}
+  booktitle = {{SAE World Congress Experience - Occupant. Protection: Safety Test and Simulation Methods and Applications}},
   preview   = {synchrono-diagram.png},
 }
 
@@ -166,7 +166,7 @@ @article{RL:MSD:2021
   title   = {{End-to-end learning for off-road terrain navigation using the Chrono open-source simulation platform}},
   journal = {{Multibody System Dynamics}},
   year    = {2021},
-  pdf     = {https://par.nsf.gov/servlets/purl/10349473}
+  pdf     = {https://par.nsf.gov/servlets/purl/10349473},
   preview = {gator.jpg},
 }
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