There seems to be evidence that the Clinton emails released by Wikileaks were edited before release. This would conflict with their stated goals and I think is what's hurting their credibility the most right now.
There is absolutely no evidence to suggest that (outside of the Clinton camp and Podesta) and given Wikileaks track record, it's highly unlikely.
I think some wires are being crossed here, as there has been recent evidence of modifications to earlier leaks from Guccifer 2.0 of DNC documents. These were not published by WL but they are often grouped with WL due to Guccifer 2.0 claiming to be a WL source