Fix names spelling in the contributor list

Change-Id: I057f0ae070e4b66628dd2ff64aa716dc2000f594
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Dmitry Savchenko <dmitry.a.sav@gmail.com>
Reviewed-by: Viktor Ostashevskyi <ostash@ostash.kiev.ua>
Reviewed-by: Andrey M. Tokarev <andrey.m.tokarev@gmail.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

dist/changes-2.8.0

@@ -173,7 +173,7 @@ Alessandro Portale
 Andreas Holzammer
 André Hartmann
 André Pönitz
-Andrey M. Tokarev
+Andrey M. Tokarev (Андрей М. Токарев)
 Aurindam Jana
 Christian Kandeler
 Christian Stenger
@@ -181,7 +181,7 @@ Christian Strømme
 Daniel Teske
 David Schulz
 Debao Zhang
-Dmitry Savchenko
+Dmitry Savchenko (Дмитрий Савченко)
 Eike Ziller
 El Mehdi Fekari
 Erik Verbruggen
@@ -215,7 +215,7 @@ Petar Perisin
 Przemyslaw Gorszkowski
 Rafael Roquetto
 Robert Löhning
-Sergey Belyashov
+Sergey Belyashov (Сергей Беляшов)
 Sergey Shambir
 Shane Peelar
 Thiago Macieira
@@ -225,4 +225,4 @@ Timo Jyrinki
 Tobias Hunger
 Tobias Nätterlund
 Tor Arne Vestbø
-Victor Ostashevsky
+Viktor Ostashevskyi (Віктор Осташевський)