Inconsistency in Exception Handling between Juju SDK Charms Documentation and Repository

[mateofloreza]

Problem:

The documentation at link regarding exception handling in the Juju SDK charms appears to differ from the actual implementation in the associated GitHub repository.
Details:

Discrepancy: The way exceptions are raised in the technical documentation doesn’t align with the implementation in the [GitHub repository](https://github.com/canonical/juju-sdk-tutorial-k8s.git).
Effect: This inconsistency affects the verification process outlined in the documentation, leading to potential confusion for developers trying to integrate their charms with PostgreSQL.
Specifics: The guide suggests a certain exception handling approach, but the repository employs a different method, impacting the intended behavior.

Steps to Reproduce:

Follow the instructions outlined in the documentation for integrating a charm with PostgreSQL.
Compare the exception handling process as described in the documentation with the actual implementation in the associated repository.

Expected Behavior:

The documentation and the repository should have consistent guidance on exception handling, ensuring developers have accurate and reliable information when working on charm integration with PostgreSQL.