⚠️ Fix bad rebase 1 of 2

Usually doing something like;

```bash
git pull --rebase -X theirs origin master
```

...  is fine, but this time Git lost the plot in a few places.

Fortunately it was only one file, so doing a selective show via;

```bash
git show origin/master:lib/stdlib/src/lists.erl > lib/stdlib/src/lists.erl
```

...  And then manually going through to re-add doctest line numbers, and
adjust indentation, wasn't too much of a chore.