Adding axisFormat to docs?

[Jmuccigr]

Any objection to adding axisFormat to the example in the docs? I had to search to figure out how to use the scale information

[imma90]

This pull request is about axisFormat in the Gantt: [(https://github.com/mermaidjs/mermaid-gitbook/pull/19)]. In other words: pull request #19 in mermaidjs/mermaid-gitbook

Or is this axisFormat also relevant for other types of diagrams, so that it should be described elsewhere?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.