Further mode names normalisation in docs.

--HG--
extra : rebase_source : 6c4be66d8c4ac56d10e7d86fc45da7b80ff484aa

common/modules/javascript.jsm

@@ -701,7 +701,7 @@ var JavaScript = Module("javascript", {
         modes.addMode("REPL", {
             description: "JavaScript Read Eval Print Loop",
             bases: [modes.COMMAND_LINE],
-            displayName: "REPL"
+            displayName: Class.memoize(function () this.name)
         });
     },
     commandline: function initCommandLine(dactyl, modules, window) {