Documentation for `OnTuplesSets` and `OnTuplesTuples` is misleading

@lhsoicher wrote: The documentation for OnTuplesSets is misleading. It reads: ‣ OnTuplesSets( set, g ) ────────────────────────────────────────── function implements the action on tuples of sets. set must be a list whose entries are again sorted lists, otherwise an error is triggered (see 41.3). .... I suggest instead (read carefully): ‣ OnTuplesSets( tuple, g ) ────────────────────────────────────────── function implements the action on tuples of sets. tuple must be a list whose entries are strictly sorted lists, otherwise an error is triggered (see 41.3). The documentation for OnTuplesTuples says: ‣ OnTuplesTuples( set, g ) ──────────────────────────────────────── function implements the action on tuples of tuples. .... At the very least, it should say: ‣ OnTuplesTuples( tuple, g ) ──────────────────────────────────────── function implements the action on tuples of tuples.