Fix dark theme

packages/all-packages/src/index.ts

@@ -50,6 +50,7 @@ import "@jupyterlab/shortcuts-extension";
 import "@jupyterlab/tabmanager-extension";
 import "@jupyterlab/terminal";
 import "@jupyterlab/terminal-extension";
+import "@jupyterlab/theme-dark-extension";
 import "@jupyterlab/theme-light-extension";
 import "@jupyterlab/tooltip";
 import "@jupyterlab/tooltip-extension";

packages/theme-dark-extension/src/index.ts

@@ -3,7 +3,7 @@ import {
 } from '@jupyterlab/application';
 
 
-import '@jupyterlab/themes/style/variables-dark.css';
+import '@jupyterlab/theming/style/variables-dark.css';
 
 
 /**