[PPAPI] Fix a bunch of spelling mistakes

ppapi/api/pp_touch_point.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 API to create a touch point or position where fingers        
  * makes contact with touch screen device.
  */
 
 /**
  * The <code>PP_TouchPoint</code> struct represents all information about a
- * single touch point, such ase position, id, rotation angle, and pressure.
+ * single touch point, such as position, id, rotation angle, and pressure.
  */
 [assert_size(28), returnByValue]
 struct PP_TouchPoint {
   /**
    * This value represents the identifier for this TouchPoint. The id
    * corresponds to the order in which the points were pressed. For example,
    * the first point to be pressed has an id of 0, the second has an id of 1,
    * and so on. An id can be reused when a touch point is released.  For
    * example, if two fingers are down, with id 0 and 1, and finger 0 releases,
    * the next finger to be pressed can be assigned to id 0.
@@ skipping 40 matching lines @@
  */
 PP_INLINE struct PP_TouchPoint PP_MakeTouchPoint(void) {
   struct PP_TouchPoint result = { 0, {0, 0}, {0, 0}, 0, 0 };
   return result;
 }
 /**
  * @}
  */
 
 #endinl