updated titles

Author: simongravelle

AUTHORS.md

@@ -1,13 +1,11 @@
-Authors
--------
+## Authors
 
-Project creator
-~~~~~~~~~~~~~~~
+
+### Project creator
 
 - [Simon Gravelle](https://github.com/simongravelle), University Grenoble Alpes, CNRS, LIPhy, Grenoble, 38000, France
 
-Contributors
-~~~~~~~~~~~~
+### Contributors
 
 - Jacob R. Gissinger, Stevens Institute of Technology, Hoboken, NJ 07030, USA
 - Axel Kohlmeyer, Institute for Computational Molecular Science, Temple University, Philadelphia, PA 19122, USA

DESCRIPTION.md

@@ -1,5 +1,4 @@
-LAMMPS tutorials' special repository
-====================================
+# LAMMPS tutorials' special repository
 
 This repository contains the list of [authors](AUTHORS.md) from the LAMMPS tutorials
 initiative.

README.md

@@ -8,12 +8,12 @@ the [LAMMPS tutorials organization](https://github.com/lammpstutorials).
 
 ## Authors
 
-Project creator \~\~\~\~\~\~\~\~\~\~\~\~\~\~\~
+### Project creator
 
 -   [Simon Gravelle](https://github.com/simongravelle), University
     Grenoble Alpes, CNRS, LIPhy, Grenoble, 38000, France
 
-Contributors \~\~\~\~\~\~\~\~\~\~\~\~
+### Contributors
 
 -   Jacob R. Gissinger, Stevens Institute of Technology, Hoboken, NJ
     07030, USA