vi: modify phoneme e- for "anh" and "ach"

dictsource/vi_rules

@@ -816,6 +816,10 @@ ỵ	ỵ
         oảnh       we-n^4
         oãnh       we-n^5
         oạnh       we-n^6
+		oach		we-c
+		oách		we-c3
+		oạch		we-c6
+		
 
 .group ò
         ò          O2

phsource/ph_vietnam

@@ -177,7 +177,7 @@ phoneme e-
    ELIF nextPhW(n^) THEN
 	length 100
 	ENDIF
-   FMT(vietnam/e_short_2)
+   FMT(vietnam/e_short_1)
 endphoneme
 
 phoneme i