The Mueller indictment only mentions the official name of Russia–the Russian Federation–on one occasion. And that mention only appears in a section detailing how the Internet Research Agency’s trolling efforts were also aimed at Russian citizens and electoral systems.
There are three references to the “Russian government” in Mueller’s new indictment, but none of those references explicitly allege electoral interference by the Russian government itself. One of those references–on page 24–simply rehashes U.S. media reporting about alleged Russian government interference. Another reference–on page 5–notes that the Internet Research Agency LLC was registered in Russia as a Russian corporate entity. The final reference–on page 6–notes that two other organizations, Concord Management and Consulting and Concord Catering, have received contracts for the Russian government–but does not detail any of those contracts.
In other words, the only detailed mention of the Russian nation-state in Mueller’s indictment is the fact that the Russian troll farm actively worked to troll and interfere with Russian elections as well. That’s kind of important.