Merge branch 'patch-3' into 'master'

docs: fix typo, it should refer to `domain_blacklist_enabled` setting

## What does this MR do?

fix the documentation

## Are there points in the code the reviewer needs to double check?

N/A

## Why was this MR needed?

typo fix

## What are the relevant issue numbers?

N/A

## Screenshots (if relevant)

N/A

## Does this MR meet the acceptance criteria?

yes, it's just a typo fix in the documentation without any code or business logic changes

See merge request !5899

doc/api/settings.md

@@ -67,7 +67,7 @@ PUT /application/settings
 | `default_snippet_visibility` | integer | no | What visibility level new snippets receive. Can take `0` _(Private)_, `1` _(Internal)_ and `2` _(Public)_ as a parameter. Default is `0`.|
 | `domain_whitelist` | array of strings | no | Force people to use only corporate emails for sign-up. Default is null, meaning there is no restriction. |
 | `domain_blacklist_enabled` | boolean | no | Enable/disable the `domain_blacklist` |
-| `domain_blacklist` | array of strings | yes (if `domain_whitelist_enabled` is `true` | People trying to sign-up with emails from this domain will not be allowed to do so. |
+| `domain_blacklist` | array of strings | yes (if `domain_blacklist_enabled` is `true`) | People trying to sign-up with emails from this domain will not be allowed to do so. |
 | `user_oauth_applications` | boolean | no | Allow users to register any application to use GitLab as an OAuth provider |
 | `after_sign_out_path` | string | no | Where to redirect users after logout |
 | `container_registry_token_expire_delay` | integer | no | Container Registry token duration in minutes |