Handling log text in code blocks

[ChristianMurphy]

Context

Displaying log output inside of a code block.
The logs are generic text and would not benefit from syntax highlighting.
While still allowing other code blocks to highlight in appropriate languages.

Issue

Inline code blocks `example.md` and code blocks without a language flag

```
example.md
```

Both will automatically attempt to guess the language being used.
In the examples above, language css is guessed, which renders the filename as an element, and the extension as a css class.

Potential solution

Add a flag that disables automatic language guessing when language flag is missing from code block.

[inlinestyle]

Hey @ChristianMurphy! If you can figure out the correct options to pass to the LowLight component (that this project just wraps) to make that work, I'm all for it. Even better if you make a PR!