[PPAPI] Fix a bunch of spelling mistakes

ppapi/api/private/ppb_tcp_server_socket_private.idl

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * This file defines the <code>PPB_TCPServerSocket_Private</code> interface.
  */
 
 label Chrome {
@@ skipping 28 matching lines @@
   int32_t Listen([in] PP_Resource tcp_server_socket,
                  [in] PP_NetAddress_Private addr,
                  [in] int32_t backlog,
                  [in] PP_CompletionCallback callback);
 
   /**
    * Accepts single connection, creates instance of
    * PPB_TCPSocket_Private and stores reference to it in
    * |tcp_socket|. |callback| is invoked when connection is accepted
    * or in the case of failure. This method can be called only after
-   * succesfull Listen call on |tcp_server_socket|.
+   * successful Listen call on |tcp_server_socket|.
    */
   int32_t Accept([in] PP_Resource tcp_server_socket,
                  [out] PP_Resource tcp_socket,
                  [in] PP_CompletionCallback callback);
 
   /**
    * Cancels all pending callbacks reporting PP_ERROR_ABORTED and
    * closes the socket. Note: this method is implicitly called when
    * server socket is destroyed.
    */
   void StopListening([in] PP_Resource tcp_server_socket);
 };