Update AUTHORS.md (add pi2)

AUTHORS.md

@@ -2,21 +2,22 @@
 
 ## Main developers
 
-* Luc Didry, aka Sky (<https://www.fiat-tux.fr>), core developer, @framasky on [Twitter](https://twitter.com/framasky) and on [Diaspora*](https://framasphere.org/public/framasky)
+- Luc Didry, aka Sky (<https://www.fiat-tux.fr>), core developer, @framasky on [Twitter](https://twitter.com/framasky) and on [Diaspora*](https://framasphere.org/public/framasky)
 
 ## Contributors
 
-* Nikos Filopoulos (italian translation)
-* Framartin (fix french translation)
-* Sébastien Duthil (fix english translation)
-* Armando Lüscher, https://noplanman.ch/ (fix css)
-* Quentin Pagès (occitan translation)
-* Yann Le Brech (htpasswd file support)
-* Jéssica Da Cunha (portuguese translation)
-* Ilker Kulgu (fix IE11 compatibility, Dutch translation)
-* Stéphane Baron (bugfix)
-* Butterfly of Fire (arabic translation)
-* Frju365 (german translation)
+- Nikos Filopoulos (italian translation)
+- Framartin (fix french translation)
+- Sébastien Duthil (fix english translation)
+- Armando Lüscher, https://noplanman.ch/ (fix css)
+- Quentin Pagès (occitan translation)
+- Yann Le Brech (htpasswd file support)
+- Jéssica Da Cunha (portuguese translation)
+- Ilker Kulgu (fix IE11 compatibility, Dutch translation)
+- Stéphane Baron (bugfix)
+- Butterfly of Fire (arabic translation)
+- Frju365 (german translation)
+- pi2 (german translation)
 
 ## Vulnerabilities / bug hunters
 
@@ -24,8 +25,8 @@ Lufi participated to a [Hackpéro](https://hackpero.com/) (sort of a bug bounty
 
 Many thanks to those who found bugs and vulnerabilities:
 
-* joker2a
-* March
-* Nicknam3
-* SaxX
-* tfairane
+- joker2a
+- March
+- Nicknam3
+- SaxX
+- tfairane