Code fences inside a list render as one line

Contribute Bug
2

This can happens when an invalid language keyword is used, let’s see

line above

size(600, 400);
println("width " + width);
println("height " + height);

versus

line above

size(600, 400);
println("width " + width);
println("height " + height);

line above
``` bleh
size(600, 400);
println("width " + width);
println("height " + height);
```

versus

line above
```
size(600, 400);
println("width " + width);
println("height " + height);
```