update credits.cgi and langs doku

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

html/cgi-bin/credits.cgi

@@ -78,8 +78,8 @@ Peter Pfeiffer,
 Daniel Glanzmann,
 Daniel Weismüller,
 Heiner Schmeling,
-Timo Eissler,
 Stephan Feddersen,
+Timo Eissler,
 Jan Lentfer,
 Marcus Scholz,
 Ersan Yildirim,
@@ -110,6 +110,7 @@ Jorrit de Jonge,
 Jörn-Ingo Weigert,
 Przemek Zdroik,
 Ramax Lo,
+Adolf Belka,
 Alexander Rudolf Gruber,
 Andrew Bellows,
 Axel Gembe,