Fix names of some languages.

etc/HELLO

@@ -23,6 +23,7 @@ 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
 Spanish (Espa,Aq(Bol)	,A!(BHola!
 Swedish (Svenska)	Hej, Goddag
 Thai (,T@RIRd7B(B)		,TJ0GQ1J04U1$0CQ1:(B, ,TJ0GQ1J04U10$h1P(B
@@ -30,12 +31,11 @@ Tibetan (2$(7"70"]1"2$(8!;2$(7%P`"Q1"2$(8!;(B)    $(7"72$P`"Q1$(8!;
 Tigrigna ($(3"8#r!N"^(B)	$(3!Q!,!<"8(B
 Turkish (T,A|(Brk,Ag(Be)	Merhaba
 Vietnamese (Ti,1*(Bng Vi,1.(Bt)	Ch,1`(Bo b,1U(Bn
-Yoguslavian		Zdravo
 
 Japanese ($BF|K\8l(B)		$B$3$s$K$A$O(B, (I:]FAJ(B
 Chinese ($AVPND(B,$AFUM(;0(B,$A::So(B)	$ADc:C(B
 Cantonese ($(0GnM$(B,$(0N]0*Hd(B)		$(0*/=((B, $(0+$)p(B
-Hangul ($(CGQ1[(B)			$(C>H3gGO<<?d(B, $(C>H3gGO=J4O1n(B
+Korean ($(CGQ1[(B)			$(C>H3gGO<<?d(B, $(C>H3gGO=J4O1n(B
 
 Difference among chinese characters in GB, JIS, KSC, BIG5:
 	GB   -- $AT*Fx(B  $A?*7"(B