Refactor "Access token" section in API docs

doc/api/README.md

@@ -80,8 +80,8 @@ for each individual endpoint. For example, the [`/projects/:id` endpoint](projec
 There are several ways to authenticate with the GitLab API:
 
 1. [OAuth2 tokens](#oauth2-tokens)
-1. [Personal access tokens](#personal-access-tokens)
-1. [Project access tokens](#project-access-tokens-core-only) **(CORE ONLY)**
+1. [Personal access tokens](../user/profile/personal_access_tokens.md)
+1. [Project access tokens](../user/project/settings/project_access_tokens.md) **(CORE ONLY)**
 1. [Session cookie](#session-cookie)
 1. [GitLab CI/CD job token](#gitlab-ci-job-token) **(Specific endpoints only)**
 
@@ -118,17 +118,7 @@ curl --header "Authorization: Bearer OAUTH-TOKEN" https://gitlab.example.com/api
 
 Read more about [GitLab as an OAuth2 provider](oauth2.md).
 
-### Access tokens
-
-#### Personal access tokens
-
-Read more about [personal access tokens](../user/profile/personal_access_tokens.md).
-
-#### Project access tokens **(CORE ONLY)**
-
-Read more about [project access tokens](../user/project/settings/project_access_tokens.md).
-
-#### Usage
+### Personal/project access tokens
 
 Access tokens can be used to authenticate with the API by passing it in either the `private_token` parameter
 or the `Private-Token` header.

doc/topics/authentication/index.md

@@ -38,7 +38,8 @@ This page gathers all the resources for the topic **Authentication** within GitL
 ## API
 
 - [OAuth 2 Tokens](../../api/README.md#oauth2-tokens)
-- [Personal access tokens](../../api/README.md#personal-access-tokens)
+- [Personal access tokens](../../api/README.md#personalproject-access-tokens)
+- [Project access tokens](../../api/README.md#personalproject-access-tokens) **(CORE ONLY)**
 - [Impersonation tokens](../../api/README.md#impersonation-tokens)
 - [GitLab as an OAuth2 provider](../../api/oauth2.md#gitlab-as-an-oauth2-provider)
 

doc/user/profile/personal_access_tokens.md

@@ -8,7 +8,7 @@ type: concepts, howto
 > - [Notifications about expiring tokens](https://gitlab.com/gitlab-org/gitlab/-/issues/3649) added in GitLab 12.6.
 > - [Token lifetime limits](https://gitlab.com/gitlab-org/gitlab/-/issues/3649) added in [GitLab Ultimate](https://about.gitlab.com/pricing/) 12.6.
 
-If you're unable to use [OAuth2](../../api/oauth2.md), you can use a personal access token to authenticate with the [GitLab API](../../api/README.md#personal-access-tokens).
+If you're unable to use [OAuth2](../../api/oauth2.md), you can use a personal access token to authenticate with the [GitLab API](../../api/README.md#personalproject-access-tokens).
 
 You can also use personal access tokens with Git to authenticate over HTTP or SSH. Personal access tokens are required when [Two-Factor Authentication (2FA)](../account/two_factor_authentication.md) is enabled. In both cases, you can authenticate with a token in place of your password.
 
@@ -17,7 +17,7 @@ Personal access tokens expire on the date you define, at midnight UTC.
 - GitLab runs a check at 01:00 AM UTC every day to identify personal access tokens that will expire in under seven days. The owners of these tokens are notified by email.
 - In GitLab Ultimate, administrators may [limit the lifetime of personal access tokens](../admin_area/settings/account_and_limit_settings.md#limiting-lifetime-of-personal-access-tokens-ultimate-only).
 
-For examples of how you can use a personal access token to authenticate with the API, see the following section from our [API Docs](../../api/README.md#personal-access-tokens).
+For examples of how you can use a personal access token to authenticate with the API, see the following section from our [API Docs](../../api/README.md#personalproject-access-tokens).
 
 GitLab also offers [impersonation tokens](../../api/README.md#impersonation-tokens) which are created by administrators via the API. They're a great fit for automated authentication as a specific user.
 

doc/user/project/settings/project_access_tokens.md

@@ -2,13 +2,13 @@
 
 > [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/2587) in GitLab 13.0.
 
-Project access tokens are scoped to a project and can be used to authenticate with the [GitLab API](../../../api/README.md#project-access-tokens-core-only).
+Project access tokens are scoped to a project and can be used to authenticate with the [GitLab API](../../../api/README.md#personalproject-access-tokens).
 
 You can also use project access tokens with Git to authenticate over HTTP or SSH.
 
 Project access tokens expire on the date you define, at midnight UTC.
 
-For examples of how you can use a project access token to authenticate with the API, see the following section from our [API Docs](../../../api/README.md#project-access-tokens-core-only).
+For examples of how you can use a project access token to authenticate with the API, see the following section from our [API Docs](../../../api/README.md#personalproject-access-tokens).
 
 ## Creating a project access token