docs: fixes formatting error for ai apps docs

[lukegalbraithrussell]

Summary

Testing

Category

• slack_sdk.web.WebClient (sync/async) (Web API client)
• slack_sdk.webhook.WebhookClient (sync/async) (Incoming Webhook, response_url sender)
• slack_sdk.socket_mode (Socket Mode client)
• slack_sdk.signature (Request Signature Verifier)
• slack_sdk.oauth (OAuth Flow Utilities)
• slack_sdk.models (UI component builders)
• slack_sdk.scim (SCIM API client)
• slack_sdk.audit_logs (Audit Logs API client)
• slack_sdk.rtm_v2 (RTM client)
• /docs (Documents)
• /tutorial (PythOnBoardingBot tutorial)
• tests/integration_tests (Automated tests for this library)

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run python3 -m venv .venv && source .venv/bin/activate && ./scripts/run_validation.sh after making the changes.

[zimeg]

@lukegalbraithrussell LGTM! And sharp eye 👁️‍🗨️ ✨

[mwbrooks]

✅ 🎯

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (ai-apps@28b191e). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@ Coverage Diff @@## ai-apps #1765 +/- ##
==========================================
Coverage ? 85.12% ==========================================
Files ? 115 Lines ? 13068 Branches ? 0 ==========================================
Hits ? 11124 Misses ? 1944 Partials ? 0 

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