fix(help): fix formatting for option arguments with no long

src/app.rs

@@ -556,7 +556,7 @@ impl<'a, 'v, 'ab, 'u, 'ar> App<'a, 'v, 'ab, 'u, 'ar>{
                             self.get_spaces((longest_opt + 4) - (v.long.unwrap().len() + v.name.len() + 2 + mult))
                         } else {
                             // 7 is '--=' (3) + tab (4)
-                            self.get_spaces(longest_opt + 7)
+                            self.get_spaces((longest_opt + 6) - (v.name.len() + mult))
                         },
                         if let Some(h) = v.help {
                             format!("{}{}", h,