Update links from main reference docs to Maven Plugin docs

See gh-19080

spring-boot-project/spring-boot-docs/src/main/asciidoc/attributes.adoc

@@ -29,7 +29,7 @@
 :spring-boot-master-code: https://github.com/{github-repo}/tree/master
 :spring-boot-current-docs: https://docs.spring.io/spring-boot/docs/current/reference
 :spring-boot-actuator-restapi: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/actuator-api/
-:spring-boot-maven-plugin-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/maven-plugin/
+:spring-boot-maven-plugin-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/maven-plugin/html/
 :spring-boot-gradle-plugin-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/gradle-plugin/reference/html/
 :spring-boot-gradle-plugin-pdfdocs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/gradle-plugin/reference/pdf/spring-boot-gradle-plugin-reference.pdf
 :spring-boot-gradle-plugin-api: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/gradle-plugin/reference/api/

spring-boot-project/spring-boot-docs/src/main/asciidoc/build-tool-plugins.adoc

@@ -14,7 +14,7 @@ If you are just getting started, you might want to read "`<<using-spring-boot.ad
 The Spring Boot Maven Plugin provides Spring Boot support in Maven, letting you package executable jar or war archives and run an application "`in-place`".
 To use it, you must use Maven 3.2 (or later).
 
-NOTE: See the {spring-boot-maven-plugin-docs}[Spring Boot Maven Plugin Site] for complete plugin documentation.
+NOTE: See the {spring-boot-maven-plugin-docs}[Spring Boot Maven Plugin Documentation] for complete plugin documentation.
 
 
 

spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -2338,7 +2338,7 @@ To generate build information with Maven, add an execution for the `build-info`
 	</build>
 ----
 
-TIP: See the {spring-boot-maven-plugin-docs}[Spring Boot Maven Plugin documentation] for more details.
+TIP: See the {spring-boot-maven-plugin-docs}/#build-info[Spring Boot Maven Plugin documentation] for more details.
 
 The following example does the same with Gradle: