fix typo in close method

index.html

@@ -586,7 +586,7 @@ <h2 id="MIDIPort"><a>MIDIPort</a> Interface</h2>
           <p>
             Makes the MIDI device corresponding to the 
             <code><a href="#idl-def-MIDIPort">MIDIPort</a></code> explicitly 
-            unavailable (subsequently changing the state from "open" to "connected").
+            unavailable (subsequently changing the state from "open" to "closed").
             Note that successful invocation of this method will result in MIDI 
             messages no longer being delivered to MIDIMessageEvent handlers on a 
             <a>MIDIInputPort</a> (although setting a new handler will cause an