Tried to add Vim to the HTML editors but couldn't. Something was wrong with my inputs. Also: why such an enourmous form to add something? It gets filled automat

Tried to add Vim to the HTML editors but couldn't. Something was wrong with my inputs. Also: why such an enourmous form to add something? It gets filled automatically with bizarre values (try vim.org). "vim" as a title is apparently too short.