Part of a report that Soviet leader Mikhail S. Gorbachev made to the Supreme Soviet, in which he called the November summit with President Reagan "positive," appeared in an advertisement in the French newspaper Le Monde. The ad, signed by the Soviet news agency Novosti, was purchased because "a certain number of points considered essential by the Soviet Union . . . were not sufficiently reflected in the French press," a Novosti spokesman said. The ad contained a long statement in which Gorbachev told the Soviet legislators that although there was no breakthrough on arms control, "we must say that the general result of the summit was positive."