fid bug 79677. add bidi option to the dtd

r/sr = kin
should not impact the tree

suite/locales/en-US/chrome/common/pref/preftree.dtd

@@ -8,6 +8,7 @@
 <!--LOCALIZATION NOTE (navigator.label): DONT_TRANSLATE -->
 <!ENTITY navigator.label "Navigator">
 <!ENTITY history.label "History">
+<!ENTITY bidi.label "Bidi Options">
 <!ENTITY languages.label "Languages">
 <!ENTITY applications.label "Helper Applications">
 <!--LOCALIZATION NOTE (smartBrowse.label): DONT_TRANSLATE -->