Q linked the DAG Rosenstein document where Mueller was appointed to serve as Special Council & take over the Comey investigation. In the document, the name Comey is spelled as "Corney". On the document photo, it seems that someone connect the "r" & "n" to look like an "m".

https://www.justice.gov/opa/press-release/file/967231/downloadB.

https://twitter.com/comey/status/1008040710283628544?lang=en