[Ignore] Update Notebook dts (PowerShell#3041)

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

Author: github-actions[bot]

vscode.proposed.d.ts

@@ -360,7 +360,7 @@ declare module 'vscode' {
  *
  * Messages are only delivered if the editor is live.
  *
- * @param message Body of the message. This must be a string or other json serilizable object.
+ * @param message Body of the message. This must be a string or other json serializable object.
  */
 postMessage(message: any): Thenable<boolean>;
 
@@ -562,7 +562,7 @@ declare module 'vscode' {
  *
  * Messages are only delivered if the editor is live.
  *
- * @param message Body of the message. This must be a string or other json serilizable object.
+ * @param message Body of the message. This must be a string or other json serializable object.
  */
 postMessage(message: any): Thenable<boolean>;