[PPAPI] Fix a bunch of spelling mistakes

ppapi/cpp/mouse_cursor.h

Index: ppapi/cpp/mouse_cursor.h
diff --git a/ppapi/cpp/mouse_cursor.h b/ppapi/cpp/mouse_cursor.h
index ec1374cd8925fff61c00f3fb3103b5aafc37015a..827d95cdf4e444da61bbebfde8719536dd7c7774 100644
--- a/ppapi/cpp/mouse_cursor.h
+++ b/ppapi/cpp/mouse_cursor.h
@@ -26,7 +26,7 @@ class MouseCursor {
   /// <code>PP_MOUSECURSOR_TYPE_CUSTOM</code> and specify your image and hot
   /// spot.
   ///
-  /// @param[in] instance A handle indentifying the instance that the mouse
+  /// @param[in] instance A handle identifying the instance that the mouse
   /// cursor will affect.
   ///
   /// @param[in] type A <code>PP_MouseCursor_Type</code> identifying the type
@@ -39,7 +39,7 @@ class MouseCursor {
   /// When you are specifying a predefined cursor, this parameter should be a
   /// default-constructed ImageData.
   ///
-  /// @param[in] hot_spot When setting a custom cursor, this idenfifies the
+  /// @param[in] hot_spot When setting a custom cursor, this identifies the
   /// pixel position within the given image of the "hot spot" of the cursor.
   /// When specifying a stock cursor, this parameter is ignored.
   ///