Merge pull request howdyai#1650 from southworkscom/slack-adapter/botworker-typo

[adapter-slack] Fix typo in 'src.channnel' in 'replyInteractive'

Author: benbrown

Diff for: packages/botbuilder-adapter-slack/src/botworker.ts

@@ -241,7 +241,7 @@ export class SlackBotWorker extends BotWorker {
             let msg = this.ensureMessageFormat(resp);
             // @ts-ignore
             msg.conversation = {
-                id: src.channnel
+                id: src.channel
             };
             msg.channelData.to = src.user;