Documentation misses key details

If Solr is required, it should be mentioned on the project page, in the README, and added in composer.json and search_api_spellcheck.info.yml, like below.

https://git.drupalcode.org/project/search_api_spellcheck/-/blob/4.0.x/co...

    "require": {
        "drupal/search_api": "~1.21",
        "drupal/search_api_solr": "~4.1"
    }

https://git.drupalcode.org/project/search_api_spellcheck/-/blob/4.0.x/se...

dependencies:
  - drupal:views
  - search_api:search_api
  - search_api_solr:search_api_solr

It looks like it makes no difference if the Spellcheck field is included or not, which is step #10:

10. Include the newly created Spellcheck type field into the search (7) . Click Apply.

Activate the spellcheck 'Did you mean...?' functionality →

Simplifying the title as it isn't even this project's documentation that mentions the steps, it's Search API's.