Any high school English teacher will tell you that punctuation matters.  Zach Leezer, a professional therapist, learned punctuation's importance the hard way when he went viral after a TikTok commenter suggested that he change his username, @therapistzach.  Leezer had picked the handle because he is a therapist called Zach. However, without capital letters or spacing, it unfortunately can also be read as “the rapist Zach.” Leezer, 30, a licensed clinical social worker in Chicago who runs his own private practice , created the TikTok less than a month ago to post videos about the kinds of things he focuses on with his clients: self-esteem, body image, anxiety. Then, last week, he got the comment on one of his videos.  “In that moment, my blood went hot,” Leezer told BuzzFeed News.…