Documentation: Update CONTRIBUTORS

Signed-off-by: Andreas Sturmlechner <[email protected]>

Documentation/CONTRIBUTORS

@@ -21,6 +21,7 @@ Anna “CyberTailor” <[email protected]>
 Anthony Basile <[email protected]>
 Anthony Ryan <[email protected]>
 Arfrever Frehtes Taifersar Arahesis <[email protected]>
+Arsen Arsenović <[email protected]>
 Arthur Zamarin <[email protected]>
 Ben Kohler <[email protected]>
 Ben de Groot <[email protected]>
@@ -65,7 +66,6 @@ Ian Delaney <[email protected]>
 Ian Whyman <[email protected]>
 Ilya Tumaykin <[email protected]>
 Ionen Wolkens <[email protected]>
-Ionen Wolkens <[email protected]>
 Jakov Smolić <[email protected]>
 Jakub Caban <[email protected]>
 James Beddek <[email protected]>
@@ -122,7 +122,6 @@ Michael Palimaka <[email protected]>
 Michael Seifert <[email protected]>
 Michael Skiba <[email protected]>
 Michał Górny <[email protected]>
-Mike Frysinger <[email protected]>
 Mike Frysinger <[email protected]>
 Mike Gilbert <[email protected]>
 Mike Lothian <[email protected]>
@@ -141,7 +140,6 @@ Paul Zander <[email protected]>
 Pavlos Ratis <[email protected]>
 Perfect Gentleman <[email protected]>
 Petr Vaněk <[email protected]>
-Petros S (Petross404) <[email protected]>
 Petros S <[email protected]>
 Petteri Räty <[email protected]>
 Přemysl Vohout <[email protected]>