Minor rendering issues

[fralau]

Thanks for this interesting plugin! I am @fralau, the maintainer of the mermaid2 plugin. I believe that the idea of using markdown to represent mindmaps is sensible, and that the concept appears more mature than Mermaid minmaps!

Since it worked out of the box 👍 , I threw the whole demo diagram from markmap.js.org at it. It also worked immediately, so 👍 again!

Just a minor issue, the inline code is printed vertically:

 - `inline code`

(I also appreciated that it works directly with pymdownx.superfences, out of the box).

[fralau]

As a side note, I tested the same diagram with Material, including with dark mode, and it doesn't give the same issue.

The code block is slightly squashed, but this is also a minor issue.

[fralau]

It also works perfectly with Mermaid2, which is a side bonus.

site_name: My Docs

theme: 
  # name: readthedocs
  name: material
  language: en
  palette:
    scheme: slate
    primary: red
    accent: pink

markdown_extensions:
  - pymdownx.superfences:
        # make exceptions to highlighting of code:
      custom_fences:
        - name: mermaid
          class: mermaid
          format: !!python/name:mermaid2.fence_mermaid_custom

plugins:
  - search
  - markmap
  - mermaid2:
      version: '10.1.0'

Here is the Mermaid code:

```mermaid
graph LR
    hello --> world
    world --> again
    again --> hello