Function std_to_markdown 

pub fn std_to_markdown(entries: &[&StdEntry]) -> String

Renders all stdlib entries into a Markdown reference document.

Output is structured as:

# rl stdlib reference
## std::<module> (since v0.1.0) [unstable]
### `<signature>`
<description>
**Returns:** <returns>
**Errors:** <errors>
```rl
<example>

output:

<expected_output>

See also: <see_also>