Lite deployment: Disable docprovider-extension (jupytercad#433)

* Lite deployment: Disable docprovider-extension

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

lite/jupyter-lite.json

@@ -2,7 +2,10 @@
   "jupyter-lite-schema-version": 0,
   "jupyter-config-data": {
     "appName": "My JupyterCAD App",
-    "disabledExtensions": ["@jupyter/collaboration-extension"],
+    "disabledExtensions": [
+      "@jupyter/collaboration-extension",
+      "@jupyter/docprovider-extension"
+    ],
     "signalingServers": ["https://flyio-signaling-server.fly.dev/"]
   }
 }