Revamp OAuth 2.0 Client reactive documentation

Related gh-8174

docs/modules/ROOT/nav.adoc

@@ -90,7 +90,7 @@
 *** xref:reactive/authorization/method.adoc[EnableReactiveMethodSecurity]
 ** xref:reactive/oauth2/index.adoc[OAuth2]
 *** xref:reactive/oauth2/login.adoc[OAuth 2.0 Login]
-*** xref:reactive/oauth2/access-token.adoc[OAuth2 Client]
+*** xref:reactive/oauth2/oauth2-client.adoc[OAuth2 Client]
 *** xref:reactive/oauth2/resource-server.adoc[OAuth 2.0 Resource Server]
 *** xref:reactive/registered-oauth2-authorized-client.adoc[@RegisteredOAuth2AuthorizedClient]
 ** xref:reactive/exploits/index.adoc[Protection Against Exploits]

docs/modules/ROOT/pages/reactive/oauth2/access-token.adoc

@@ -1,52 +0,0 @@
-[[webflux-oauth2-client]]
-= OAuth2 Client
-
-Spring Security's OAuth Support allows obtaining an access token without authenticating.
-A basic configuration with Spring Boot can be seen below:
-
-[source,yml]
-----
-spring:
-  security:
-    oauth2:
-      client:
-        registration:
-          github:
-            client-id: replace-with-client-id
-            client-secret: replace-with-client-secret
-            scope: read:user,public_repo
-----
-
-You will need to replace the `client-id` and `client-secret` with values registered with GitHub.
-
-The next step is to instruct Spring Security that you wish to act as an OAuth2 Client so that you can obtain an access token.
-
-.OAuth2 Client
-====
-.Java
-[source,java,role="primary"]
-----
-@Bean
-SecurityWebFilterChain configure(ServerHttpSecurity http) throws Exception {
-	http
-		// ...
-		.oauth2Client(withDefaults());
-	return http.build();
-}
-----
-
-
-.Kotlin
-[source,kotlin,role="secondary"]
-----
-@Bean
-fun webFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
-    return http {
-        // ...
-        oauth2Client { }
-    }
-}
-----
-====
-
-You can now leverage Spring Security's xref:reactive/integrations/webclient.adoc[webclient] or xref:reactive/registered-oauth2-authorized-client.adoc#webflux-roac[@RegisteredOAuth2AuthorizedClient] support to obtain and use the access token.

docs/modules/ROOT/pages/reactive/oauth2/index.adoc

@@ -4,5 +4,5 @@
 Spring Security provides OAuth2 and WebFlux integration for reactive applications.
 
 * xref:reactive/oauth2/login.adoc[OAuth 2.0 Login] - Authenticating with OAuth 2.0
-* xref:reactive/oauth2/access-token.adoc[OAuth2 Client] - Making requests to an OAuth2 Resource Server as an OAuth2 Client
+* xref:reactive/oauth2/oauth2-client.adoc[OAuth2 Client] - Making requests to an OAuth2 Resource Server as an OAuth2 Client
 * xref:reactive/oauth2/resource-server.adoc[OAuth 2.0 Resource Server] - protecting a REST endpoint using OAuth 2.0

docs/modules/ROOT/pages/reactive/registered-oauth2-authorized-client.adoc

@@ -8,7 +8,7 @@ Spring Security allows resolving an access token using `@RegisteredOAuth2Authori
 A working example can be found in {gh-samples-url}/reactive/webflux/java/oauth2/webclient[*OAuth 2.0 WebClient WebFlux sample*].
 ====
 
-After configuring Spring Security for xref:reactive/oauth2/login.adoc#webflux-oauth2-login[OAuth2 Login] or as an xref:reactive/oauth2/access-token.adoc#webflux-oauth2-client[OAuth2 Client], an `OAuth2AuthorizedClient` can be resolved using the following:
+After configuring Spring Security for xref:reactive/oauth2/login.adoc#webflux-oauth2-login[OAuth2 Login] or as an xref:reactive/oauth2/oauth2-client.adoc#webflux-oauth2-client[OAuth2 Client], an `OAuth2AuthorizedClient` can be resolved using the following:
 
 ====
 .Java

docs/modules/ROOT/pages/whats-new.adoc

@@ -48,3 +48,4 @@ Below are the highlights of the release.
 ** Added https://github.com/spring-projects/spring-security/pull/10269[custom response parsing] for Access Token Requests
 ** Added https://github.com/spring-projects/spring-security/pull/10327[jwt-bearer Grant Type support] for Access Token Requests
 ** Added https://github.com/spring-projects/spring-security/pull/10336[JWT Client Authentication support] for Access Token Requests
+** Improved https://github.com/spring-projects/spring-security/pull/10373[Reactive OAuth 2.0 Client Documentation]