Disable useMaxWidth
Disable useMaxWidth

This fixes https://github.com/JozoVilcek/gitbook-plugin-mermaid/issues/9
piranna/gitbook-plugin-plotly,piranna/gitbook-plugin-mermaid,JozoVilcek/gitbook-plugin-mermaid,JozoVilcek/gitbook-plugin-mermaid,piranna/gitbook-plugin-plotly,piranna/gitbook-plugin-mermaid