Fix: .wp-env bin/setup.sh blog description

[badasswp]

This PR resolves #3.

Description / Background Context

The blog description displayed in the .wp-env setup.sh file when the user runs the sculpt plugin command is always showing the default fallback description, even if a user supplies a custom description during setup.

wp-env run cli wp option update blogdescription "A WordPress site for plugin devlopment by Sculpt."

Reproducible Steps

• Run sculpt plugin command.
• Make sure to provide a custom description for the plugin.
• Observe that when plugin is generated, the setup.sh file contains the fallback description and not the custom one the user just added.

Expected Behaviour

If a user supplies a custom description, then that is supposed to be used instead of the fallback description. This needs to be fixed.

Testing Instructions

• Repeat steps as above.
• Observe that the fallback description now contains the custom text the user provided during setup.