[Ignore] Update Notebook dts (PowerShell#2983)

Co-authored-by: TylerLeonhardt <TylerLeonhardt@users.noreply.github.com>

Author: github-actions[bot]

vscode.proposed.d.ts

@@ -529,7 +529,7 @@ declare module 'vscode' {
 /**
  * Unique identifier for the backup.
  *
- * This id is passed back to your extension in `openCustomDocument` when opening a notebook editor from a backup.
+ * This id is passed back to your extension in `openNotebook` when opening a notebook editor from a backup.
  */
 readonly id: string;