There is add comment in each question of the proposal's Example Questions sections to enter the comment about the question, but in the tool tip of the add comment and in the discussion zone's question and answer sections are also it is showing as add a comment.
For the consistency over the site, it should be add a comment in the example questions section. Why in example question section only it is add comment? Is it for any purpose or is it a bug?
Even it is add a comment in the other Stack Exchange communities
Screen shot from the example questions section with tool tip: