In Github, codeblock syntax-highlighting trims leading/trailing newlines

[EvitanRelta]

In Github, codeblocks without syntax-highlighting preserves leading/trailing newlines:

```

const x

```

renders as:

const x

---

But when the language is specified, and theres syntax-highlighting, like:

```javascript

const x

```

it trims leading/trailing newlines when rendered:

const x

---

This CANNOT be circumvented with HTML-syntax like below. It still trims the newlines.

<pre lang="javascript"><code>

const x

</code></pre>

---

A possible fix would be to add 1 space to the front and back each, like:
(this example has double newlines on both ends, to show that u only need 1 space at the front and back)

```javascript
[SPACE]

const x

[SPACE]
```