FS#8244 Update Czech translation by Martin Crkovsky and add it to credits.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15880 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 4e5536e..663aaa1 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -351,6 +351,7 @@
 Chris Allegretta
 Alastair S
 Gerritt Gonzales
+Martin Crkovský
 
 The libmad team
 The wavpack team