typo fix ledger_exceptions.py

[petryshkaCODE]

Typo Fix in ledger_exceptions.py

This pull request fixes a typographical error in the ledger_exceptions.py file. The word "writting" was corrected to "writing" to ensure proper spelling in the exception message.

Changes:

• Corrected the spelling of "writting" to "writing" in the error message raised for the Ledger hardware wallet.

Checklist:

• Fixed spelling error in the exception message.
• Changes reviewed and tested.

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