Minor changes as per Christians most-recent review of the docs.

ppapi/api/pp_input_event.idl

Index: ppapi/api/pp_input_event.idl
===================================================================
--- ppapi/api/pp_input_event.idl	(revision 122146)
+++ ppapi/api/pp_input_event.idl	(working copy)
@@ -67,7 +67,7 @@
    * This value represents the typed character as a single null-terminated UTF-8
    * character. Any unused bytes will be filled with null bytes. Since the
    * maximum UTF-8 character is 4 bytes, there will always be at least one null
-   * at the end so you can treat this as a null-termianted UTF-8 string.
+   * at the end so you can treat this as a null-terminated UTF-8 string.
    */
   char[5] text;
 };