Fix Mermaid lexical error in docs/q.md caused by unquoted /q node label

[Copilot]

The Mermaid diagram in docs/q.md failed to render because [/q Command] uses a leading / inside square brackets, which Mermaid interprets as the start of a parallelogram shape ([/text/] or [/text\]), producing a lexical error when no closing delimiter is found.

Change

Quoted the node label to treat the content as literal text:

- A[/q Command] --> B[Analyze Workflows]
+ A["/q Command"] --> B[Analyze Workflows]

Original prompt

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This section details on the original issue you should resolve

<issue_title>Mermaid rendering error here</issue_title>
<issue_description>https://github.com/githubnext/agentics/blob/main/docs/q.md

Unable to render rich display

Lexical error on line 2. Unrecognized text.
... LR A[/q Command] --> B[Analyze Work
----------------------^

For more information, see https://docs.github.com/get-started/writing-on-github/working-with-advanced-formatting/creating-diagrams#creating-mermaid-diagrams</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Mermaid rendering error here #200

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