Merge pull request #7028 from jtpio/kernel-message-docstring

Complete docstring for IExecuteRequestMsg

packages/services/src/kernel/messages.ts

@@ -986,7 +986,7 @@ export namespace KernelMessage {
   }
 
   /**
-   * An `execute_request` message on the `
+   * An `execute_request` message on the `'shell'` channel.
    */
   export interface IExecuteRequestMsg extends IShellMessage<'execute_request'> {
     content: {