support mermaid for gatsby-starter-minimal-blog

[fmowl10]

I want to render a mermaid.js diagram in a post on gatsby-starter-minimal-blog, so I followed gatsby-remark-mermaid's guide, but it won't render.
How can I fix it?

[melloware]

I am trying to do the same and it is not working even though i am following the instructions: #1143