Clarify autolink users for SAML provider

doc/integration/omniauth.md

@@ -162,19 +162,26 @@ The chosen OmniAuth provider is now active and can be used to sign in to GitLab
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/36664) in GitLab 13.4.
 
 You can automatically link OmniAuth users with existing GitLab users if their email addresses match.
-For example, the following setting is used to enable the auto link feature for both a SAML provider and the Twitter OAuth provider:
+Automatic linking using this method works for all providers
+[except the SAML provider](https://gitlab.com/gitlab-org/gitlab/-/issues/338293). For automatic
+linking using the SAML provider, see [SAML-specific](saml.md#general-setup) instructions.
+
+As an example, the following configuration is used to enable the auto link feature for both:
+
+- OpenID Connect provider.
+- Twitter OAuth provider.
 
 **For Omnibus installations**
 
 ```ruby
-gitlab_rails['omniauth_auto_link_user'] = ["saml", "twitter"]
+gitlab_rails['omniauth_auto_link_user'] = ["openid_connect", "twitter"]
 ```
 
 **For installations from source**
 
 ```yaml
 omniauth:
-  auto_link_user: ["saml", "twitter"]
+  auto_link_user: ["openid_connect", "twitter"]
 ```
 
 ## Configure OmniAuth Providers as External