Wrong documentation since Drupal 8 for 'initial_form_field'

API page: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Database%...

On all api pages for Drupal where addField() is a known function, the description tells you:

Alternatively, the 'initial_form_field' key may be used, which will auto-populate the new field with values from the specified field.

But this doesn't work, and that's because of a simple typo. In the php code itself the spec checks on: if (isset($spec['initial_from_field'])) {

It's a small typo, but when you don't look at the code, but just the description, it will not work:

initial_from_field
initial_form_field

Please update the description to match the code, so people won't think this doesn't work:

$spec: The field specification array, as taken from a schema definition. The specification may also contain the key 'initial', the newly created field will be set to the value of the key in all rows. This is most useful for creating NOT NULL columns with no default value in existing tables. Alternatively, the 'initial_from_field' key may be used, which will auto-populate the new field with values from the specified field.