In the late 1960s, Marshall McLuhan wrote a book which was to be entitled 'The Medium is the Message'. When the proofs came, the title had been misspelt to read 'The Medium is the Massage'. Rather than 'correct' this, McLuhan felt it made a point. (For a brief but informative video, visit the BBC's 'History of Ideas' pages.)
If further proof were needed, here is a similar mistake from the BBC News app.