Added XML reference for disabled plugins

[drpayyne]

Description

Added reference for disabled plugins through the plugin name.

Fixed Issues (if relevant)

1. Fixes Reference navigation. Reference: disabled plugin declaration -> plugin declaration #146: Reference navigation. Reference: disabled plugin declaration -> plugin declaration

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with integration/functional tests (if applicable)
• All automated tests passed successfully (all builds are green)

[drpayyne]

Tests yet to be written, @coderimus. Converted this PR to draft.

[coderimus]

Hi @drpayyne , thank you for the implementation and test coverage. 👍