fix bug 68194 Wording changes to Account Settings panel

patch by stephend@netscape.com r=timeless, sr=sspitzer

mailnews/base/prefs/resources/locale/en-US/am-main.dtd

@@ -19,7 +19,7 @@
 <!ENTITY sampleSig2.label "Sample Signature 2">
 <!ENTITY sampleSig3.label "Sample Signature 3">
 <!-- LOCALIZATION NOTE (useHtml.label) : do not translate "html" in below line -->
-<!ENTITY useHtml.label "Compose messages using HTML">
+<!ENTITY useHtml.label "Compose messages in HTML format">
 <!-- LOCALIZATION NOTE (attachVCard.label) : do not translate "vCard" in below line -->
 <!ENTITY attachVCard.label "Attach my vCard to messages">
 <!ENTITY advancedButton.label "Advanced...">