PR Summary

This pull request refactors the terminology and references from 'custom fields' to 'inventory fields' across various documentation and configuration files. The changes include:

• Updating file paths and references in _quarto.yml and other configuration files.
• Modifying titles and content in multiple markdown files to reflect the new terminology.
• Adjusting descriptions and instructions in user guides and release notes to use 'inventory fields' instead of 'custom fields'.
• Updating image references and alt text to align with the new terminology.

These changes aim to standardize the terminology used across the project, making it more consistent and easier to understand.

Test Suggestions

• Verify that all links to 'manage-model-inventory-fields.qmd' are working correctly.
• Check that the updated titles and content in markdown files render correctly on the website.
• Ensure that the video and image references display properly with the new alt text.
• Test the functionality of adding, editing, and deleting inventory fields in the application to ensure no functionality is broken.
• Review the release notes to confirm that the terminology changes are accurately reflected.