Markdown WF Reports: Add Command Line Option to Markdown Menu

**Describe the bug**
Request to include complete command line used for workflow.
Could be done quite simply, but should be one large content area, as commands can be quite long and there may be a lot of them.

**Galaxy Version and/or server at which you observed the bug**
Galaxy Version: dev

Start by locating the Markdown workflow report implementation and the Markdown menu entry point. Trace how workflow commands are collected and rendered, then verify that the generated report includes the complete command line in a large content area.

Written by the indexing model from the issue text.