fix warning

doc/doxygen/chapters/api/insert_task.doxy

@@ -36,7 +36,7 @@ appropriated objects as defined elsewhere.
 </ul>
 
 When using ::STARPU_DATA_ARRAY, the access mode of the data handles is
-not defined, it will be taken from the codelet ::modes or ::dyn_modes field. One
+not defined, it will be taken from the codelet starpu_codelet::modes or starpu_codelet::dyn_modes field. One
 should use ::STARPU_DATA_MODE_ARRAY to define the data handles along with the
 access modes.