Polish "How-to Guides"

docs/src/docs/asciidoc/how-to.adoc

@@ -1,29 +1,19 @@
 [[how-to]]
 = "How-to" Guides
-:toc: left
-:toclevels: 3
-
-This page is under construction.
 
 [[how-to-overview]]
 == Overview
 
-** Obtain an access token using a specific grant_type:
-*** `authorization_code`
-*** `client_credentials`
-*** `refresh_token`
-** Customize form based login
-** Authenticate a user with two-factor authentication
-** Customize the user consent page
-** Authenticate using OpenID Connect 1.0 authorization_code flow
-** Customize the OpenID Connect 1.0 UserInfo response
-** Authenticate using social login, e.g. Google
-** Authenticate a user in a Single Page Application with PKCE
-** Customize client authentication for specific authentication methods
-** Handle errors and customize the OAuth 2.0 Error response
-** Authorize an access token containing custom authorities, e.g. roles, groups, permissions, etc.
-*** Customize the headers / claims in a JWT
-** Deny access for a revoked JWT access token
-*** Introspect / revoke an access token
-** Provide a JWK source backed by a key rotation strategy
-** xref:guides/how-to-jpa.adoc[Implement core services with JPA]
+* xref:guides/how-to-jpa.adoc[Implement core services with JPA]
+
+[[how-to-coming-soon]]
+== Coming Soon
+
+* Customize the OpenID Connect 1.0 UserInfo response (https://github.com/spring-projects/spring-authorization-server/issues/537[#537])
+* Authenticate using social login, e.g. Google (https://github.com/spring-projects/spring-authorization-server/issues/538[#538])
+* Authenticate a user in a Single Page Application with PKCE (https://github.com/spring-projects/spring-authorization-server/issues/539[#539])
+* Deny access for a revoked JWT access token (https://github.com/spring-projects/spring-authorization-server/issues/543[#543])
+* Provide a JWK source backed by a key rotation strategy (https://github.com/spring-projects/spring-authorization-server/issues/544[#544])
+* Customize form based login (https://github.com/spring-projects/spring-authorization-server/issues/533[#533])
+* Add a custom grant type (https://github.com/spring-projects/spring-authorization-server/issues/686[#686])
+* Authenticate a user with two-factor authentication (https://github.com/spring-projects/spring-authorization-server/issues/534[#534])