Update features.mli

Author: Rw1nd

src/plugin/features.mli

@@ -10,8 +10,8 @@ val get_goal_features : hhdef list (* hyps *) -> hhdef (* goal *) -> string list
 val extract : hhdef list (* hyps *) -> hhdef list (* defs *) -> hhdef (* goal *) ->
   string (* (temporary) file name *)
 
-val extract_given_lemmas : hhdef list (* hyps *) -> hhdef list (* defs *) -> hhdef list (* argus *) -> hhdef (* goal *) -> string (*  *) -> 
-  hhdef list (* (temporary) file name *)
+val extract_given_lemmas : hhdef list (* hyps *) -> hhdef list (* defs *) -> hhdef list (* lemmas *) -> hhdef (* goal *) -> string (* ATP name *) -> 
+  hhdef list (* used objects *)
 
 val run_predict : string (* file name (from `extract`) *) -> hhdef list (* defs *) ->
   int (* pred_num *) -> string (* pred_method *) ->