Fix typo from patch for bug 476897

--HG--
extra : rebase_source : b91f8f0fa5e96438fb676264a19370a0bedbfc42

modules/libpref/src/init/all.js

@@ -154,7 +154,7 @@ pref("gfx.downloadable_fonts.enabled", true);
 pref("accessibility.browsewithcaret", false);
 pref("accessibility.warn_on_browsewithcaret", true);
 
-pref("accessibility.browserwithcaret_shortcut.enabled", true);
+pref("accessibility.browsewithcaret_shortcut.enabled", true);
 
 #ifndef XP_MACOSX
 // Tab focus model bit field: