[PPAPI] Fix a bunch of spelling mistakes

ppapi/api/ppb_audio_config.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 PPB_AudioConfig interface for establishing an
  * audio configuration resource within the browser.
  */
 
@@ skipping 182 matching lines @@
    * 0 if the resource is invalid. Refer to
    * RecommendSampleFrameCount() for more on sample frame counts.
    */
   uint32_t GetSampleFrameCount(
       [in] PP_Resource config);
 
   /**
    * RecommendSampleRate() returns the native sample rate that the browser
    * is using in the backend.  Applications that use the recommended sample
    * rate will have potentially better latency and fidelity.  The return value
-   * is indended for audio output devices.  If the output sample rate cannot be
+   * is intended for audio output devices.  If the output sample rate cannot be
    * determined, this function can return PP_AUDIOSAMPLERATE_NONE.
    *
    * @param[in] instance
    *
    * @return A <code>uint32_t</code> containing the recommended sample frame
    * count if successful.
    */
   [version=1.1]
   PP_AudioSampleRate RecommendSampleRate(
       [in] PP_Instance instance);
 
 };