Fix #267 Mention the necessity of lambda:InvokeFunction permission in lazy listener document

[seratch]

This pull request resolves #267

Category (place an x in each of the [ ])

• slack_bolt.App and/or its core components
• slack_bolt.async_app.AsyncApp and/or its core components
• Adapters in slack_bolt.adapter
• Document pages under /docs
• Others

Requirements (place an x in each [ ])

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you are agreeing to those rules.

• 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 ./scripts/install_all_and_run_tests.sh after making the changes.

[codecov]

Codecov Report

Merging #286 (9e7014b) into main (efab010) will increase coverage by 0.02%.
The diff coverage is n/a.

❗ Current head 9e7014b differs from pull request most recent head c0eb1d0. Consider uploading reports for the commit c0eb1d0 to get more accurate results

@@            Coverage Diff             @@
##             main     #286      +/-   ##
==========================================
+ Coverage   91.50%   91.52%   +0.01%     
==========================================
  Files         160      160              
  Lines        5000     5000              
==========================================
+ Hits         4575     4576       +1     
+ Misses        425      424       -1     

Impacted Files	Coverage Δ
slack_bolt/listener/thread_runner.py	94.33% <0.00%> (+0.94%)	⬆️

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