Github markdown (not docusaurus) display is broken if ``` isn't preceded by a blank line

[lukaw3d]

If someone is browsing docs on github instead of docusaurus
https://github.com/oasisprotocol/docs/blob/b80c7dadd51f6330ed70fb13d7f4a0c796b7f44d/docs/build/use-cases/price-oracle.mdx

Ideally this could be detected by changing

docs/.markdownlint-cli2.cjs

Line 12 in b80c7da

'blanks-around-fences': false,

and auto-fixed with fmt-markdown. But in the following case it thinks opening fence is invalid and closing fence is opening :/

  <details>
      <summary>Dockerfile</summary>
  ```dockerfile
  FROM python:alpine3.17
  
  WORKDIR /bot
  COPY ./bot.py ./requirements.txt /bot
  RUN pip install -r requirements.txt
  
  CMD ["python", "bot.py"]
+ 
  ```
  </details>