Update docs

book/src/themes.md

@@ -75,8 +75,13 @@ Possible keys:
 | `label`                  | For lifetimes                       |
 | `module`                 |                                     |
 | `ui.background`          |                                     |
+| `ui.cursor`              |                                     |
+| `ui.cursor.insert`       |                                     |
+| `ui.cursor.select`       |                                     |
+| `ui.cursor.match`        | Matching bracket etc.               |
 | `ui.linenr`              |                                     |
 | `ui.statusline`          |                                     |
+| `ui.statusline.inactive` |                                     |
 | `ui.popup`               |                                     |
 | `ui.window`              |                                     |
 | `ui.help`                |                                     |