Balderdash. With all the vulnerabilities of Hillary's 'server", and the 99+% probability that it has been routinely penetrated, _ANYBODY_ could have leaked her emails to Wikileaks.
On the other hand, _if_ it was the Russians, it's likely that Vlad Putin is simply trying to tighten the noose around Hillary's neck. I don't think he actually wants to hang her out to dry - she'll be much more useful as a "president on a string" where Putin can control her. The last thing in the world that Putin wants is some unpredictable "loose cannon" as the President of the United States.