Missing link on map documentation

[ewh0]

I'm reading the docs for sass map https://sass-lang.com/documentation/values/maps, and I notice such a paragraph

Instead of setting values one-by-one, you can also merge two existing maps using [map.merge($map1, $map2)][].

There is no link attached map.merge($map1, $map2). In contrast, this is the paragraph above it

It’s also useful to add new pairs to a map, or to replace the value for an existing key. The map.set($map, $key, $value) function does this: it returns a copy of $map with the value at $key set to $value.