Add Cyrillic script for Serbo-Croatian

Delete spaces at the tail for GB.

etc/HELLO

@@ -23,10 +23,11 @@ Nederlands, Vlaams	Hallo, Dag
 Norwegian (Norsk)	Hei, God dag
 Polish			Dzie,Bq(B dobry, Hej
 Russian (,L@caaZXY(B)	,L7T`PRabRcYbU(B!
-Serbo-Croatian		Zdravo
+Serbo-Croatian		Zdravo, ,L7T`PR^(B
 Spanish (Espa,Aq(Bol)	,A!(BHola!
 Swedish (Svenska)	Hej, Goddag
 Thai (,T@RIRd7B(B)		,TJ0GQ1J04U1$0CQ1:(B, ,TJ0GQ1J04U10$h1P(B
+
 Tibetan (2$(7"70"]1"2$(8!;2$(7%P`"Q1"2$(8!;(B)    $(7"72$P`"Q1$(8!;2$(7"E0"S1"G$(8!;$(7"72"20"[1$(8!;2$(7"D0"[1"#"G!>(B
 Tigrigna ($(3"8#r!N"^(B)	$(3!Q!,!<"8(B
 Turkish (T,A|(Brk,Ag(Be)	Merhaba