Rich Text / Inline Entries should support array content

Given this **ts-markdown** code:

```ts
italic(
  [
    bold('Bold/Italic Label:'), 
    ' Some italic text.'
  ]
)
```

The expected markdown should be:

```md
***Bold/Italic Label:** Some italic text.*
```

> **Rendered**:
> ***Bold/Italic Label:** Some italic text.*

Currently, it's rendering:
```md
**
```