Fix errors in exception-handling.md

[techboy-coder]

This PR addresses the following issues:

• Corrected Math Error: Updated the example where 10 / 5 was incorrectly stated as 5. The correct result is 2.
• Improved Clarity in Exception Handling Example: Revised the example for catching multiple exceptions to remove ambiguity and enhance understanding.

Let me know if further adjustments are needed!

[netlify]

‼️ Deploy request for pythoncheatsheet rejected.

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