add use-id warning

Archmonger · Archmonger · commit 3de3fd3fdee2 · 2023-06-20T03:55:58.000-07:00
diff --git a/docs/src/reference/use-id.md b/docs/src/reference/use-id.md
@@ -2,6 +2,13 @@
 title: Use ID 🚫
 ---
 
+
+!!! warning "In Progress"
+
+    This feature is planned, but not yet developed.
+
+    See [this issue](https://github.com/reactive-python/reactpy/issues/985) for more details.
+
 ## Overview
 
 <p class="intro" markdown>
