markdownlint/doc-build/md048.md

This rule is triggered when the symbols used in the document for fenced code blocks do not match the configured code fence style:

```ruby
# Fenced code
```

~~~ruby
# Fenced code
~~~

To fix this issue, use the configured code fence style throughout the document:

```ruby
# Fenced code
```

```ruby
# Fenced code
```

The configured code fence style can be a specific symbol to use (backtick, tilde) or it can require all code fences match the first code fence (consistent).

Rationale: Consistent formatting makes it easier to understand a document.