Improve the warning message in App/AsyncApp constructor #256

[seratch]

This pull request improves the warning messages in App / AsyncApp constructor, that tells that both SLACK_BOT_TOKEN and authorize/installation_store are unexpectedly enabled. Refer to #256 for the context.

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 #257 (547f3e7) into main (e80a21c) will decrease coverage by 0.09%.
The diff coverage is 28.57%.

@@            Coverage Diff             @@
##             main     #257      +/-   ##
==========================================
- Coverage   91.37%   91.28%   -0.10%     
==========================================
  Files         160      160              
  Lines        4973     4979       +6     
==========================================
+ Hits         4544     4545       +1     
- Misses        429      434       +5     

Impacted Files	Coverage Δ
slack_bolt/app/async_app.py	94.18% <0.00%> (-0.56%)	⬇️
slack_bolt/app/app.py	86.44% <33.33%> (-0.45%)	⬇️
slack_bolt/logger/messages.py	86.79% <50.00%> (-1.45%)	⬇️

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[misscoded]

Feel free to forgo my suggestions if you disagree or if I've misunderstood the context/intent.

[seratch]

@misscoded Thanks for the suggestion, all have been merged! I will do more tests before merging this.