docs: typo in menu doc

Change-Id: Ic67cce880406a7daeb98d37312dd34c6a681a7af
diff --git a/docs/html/guide/topics/resources/menu-resource.jd b/docs/html/guide/topics/resources/menu-resource.jd
index 9247bd4..5b90ce2 100644
--- a/docs/html/guide/topics/resources/menu-resource.jd
+++ b/docs/html/guide/topics/resources/menu-resource.jd
@@ -50,13 +50,13 @@
           android:numericShortcut="<em>string</em>"
           android:checkable=["true" | "false"]
           android:visible=["true" | "false"]
-          android:enabled=["enabled" | "disabled"]
+          android:enabled=["true" | "false"]
           android:menuCategory=["container" | "system" | "secondary" | "alternative"]
           android:orderInCategory="<em>integer</em>" /&gt;
     &lt;<a href="#group-element">group</a> android:id="@[+][<em>package</em>:]id/<em>resource name</em>"
            android:checkableBehavior=["none" | "all" | "single"]
            android:visible=["true" | "false"]
-           android:enabled=["enabled" | "disabled"]
+           android:enabled=["true" | "false"]
            android:menuCategory=["container" | "system" | "secondary" | "alternative"]
            android:orderInCategory="<em>integer</em>" &gt;
         &lt;<a href="#item-element">item</a> /&gt;