[PPAPI] Fix a bunch of spelling mistakes

ppapi/api/pp_input_event.idl

Index: ppapi/api/pp_input_event.idl
diff --git a/ppapi/api/pp_input_event.idl b/ppapi/api/pp_input_event.idl
index d5a6389b3ae1c373fb83488df53d6c7a0c479540..e08f090fe4f0a2c8f0fa93139f20f4b12d1c58e1 100644
--- a/ppapi/api/pp_input_event.idl
+++ b/ppapi/api/pp_input_event.idl
@@ -54,8 +54,8 @@ struct PP_InputEvent_Key {
  * accent up (it didn't generate a character), letter key down, letter with
  * accent character event (it was modified by the previous accent key), letter
  * key up.  If the letter can't be combined with the accent, like an umlaut and
- * an 'R', the system might send unlaut down, umlaut up, 'R' key down, umlaut
- * character (can't combine it with 'R', so just send the raw unlaut so it
+ * an 'R', the system might send umlaut down, umlaut up, 'R' key down, umlaut
+ * character (can't combine it with 'R', so just send the raw umlaut so it
  * isn't lost"), 'R' character event, 'R' key up.
  */
 [assert_size(12)]