Fix links to Spring Session MongoDB examples

src/main/asciidoc/guides/boot-mongo.adoc

@@ -7,7 +7,7 @@ This guide describes how to use Spring Session backed by Mongo.
 NOTE: The completed guide can be found in the <<mongo-sample, mongo sample application>>.
 
 == Updating Dependencies
-Before you use Spring Session, you must ensure to update your dependencies.
+Before you use Spring Session MongoDB, you must ensure to update your dependencies.
 We assume you are working with a working Spring Boot web application.
 If you are using Maven, ensure to add the following dependencies:
 
@@ -18,15 +18,8 @@ If you are using Maven, ensure to add the following dependencies:
 <dependencies>
 	<!-- ... -->
 
-	<dependency>
-		<groupId>org.springframework.session</groupId>
-		<artifactId>spring-session</artifactId>
-		<version>{spring-session-version}</version>
-	</dependency>
-	<dependency>
-		<groupId>org.springframework.boot</groupId>
-		<artifactId>spring-boot-starter-data-mongodb</artifactId>
-	</dependency>
+include::{samples-dir}/pom.xml[tag=spring-session-data-mongodb]
+include::{samples-dir}/spring-session-data-mongodb-traditional-boot[tag=spring-data-mongodb]
 </dependencies>
 ----