[LyX/master] FontEncoding format is "utf8" instead of "utf-8"

[Scott Kostyshak]

commit 27ce44df4f9a1a6dfe09eac6220edba130222b64
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Fri Jul 10 20:16:55 2015 -0400

    FontEncoding format is "utf8" instead of "utf-8"
    
    Otherwise LyX does not recognized the encoding.
    
    This is a follow-up of commit f7518565.

diff --git a/lib/languages b/lib/languages
index 9defd3b..2a5d6fe 100644
--- a/lib/languages
+++ b/lib/languages
@@ -909,7 +909,7 @@ Language serbian
        BabelName        serbianc
        PolyglossiaName  serbian
        QuoteStyle       german
-       Encoding         utf-8
+       Encoding         utf8
        FontEncoding     T2A
        LangCode         sr_RS
        AsBabelOptions   true