small wording fix

Author: devalog

fern/products/ask-fern/pages/features/slack-app.mdx

@@ -85,6 +85,8 @@ Now customers will see `@YourCompanyName Support was added to the channel` inste
 
 You can improve the Slack bot's knowledge base by teaching it from real customer interactions. When the bot provides answers in Slack, you can refine those responses and save them for future reference.
 
+How it works:
+
 1. **A user asks a question** - The bot responds in the channel
 2. **Review the response** - If the answer needs improvement, reply in the thread to the bot's message
 3. **Provide corrections** - Add missing context, correct inaccuracies, or clarify the response