chore: add warning re: broken embed buttons (coder#982)

Katie Horne · web-flow · commit 73a98e091d29 · 2022-05-04T12:10:49.000-05:00
diff --git a/admin/templates.md b/admin/templates.md
@@ -84,6 +84,10 @@ The **Embeddable Button** section features a form you can use for generating an
 embeddable button. This button makes it easy for developers to use your
 [workspace template](../workspaces/workspace-templates/index.md).
 
+> Due to changes made to Coder v1.30.0+ to support the use of multiple Git
+> providers, you must regenerate any embeddable buttons created using v1.29.x or
+> earlier. Otherwise, the buttons will not work correctly.
+
 To create your button:
 
 1. Go to **Manage** > **Admin** > **Templates**.
diff --git a/changelog/1.30.0.md b/changelog/1.30.0.md
@@ -5,7 +5,11 @@ description: "Released on 04/27/2022"
 
 ### Breaking changes ❗
 
-There are no breaking changes in 1.30.0.
+- web: Due to changes made to Coder to support the use of multiple Git
+  providers, you must regenerate any existing
+  [embeddable buttons](../admin/templates.md#embeddable-button) (e.g., those
+  created with Coder v1.29.x or earlier). Otherwise, the buttons will not work
+  correctly.
 
 ### Features ✨
 
