Edit and clean up the Sample User Guides.

samples/javaconfig/gemfire-p2p/src/main/java/sample/Config.java

@@ -20,7 +20,7 @@ import org.springframework.data.gemfire.config.annotation.PeerCacheApplication;
 import org.springframework.session.data.gemfire.config.annotation.web.http.EnableGemFireHttpSession;
 
 // tag::class[]
-@PeerCacheApplication(name = "SpringSessionSampleJavaConfigGemFireP2p", logLevel = "error") // <1>
+@PeerCacheApplication(name = "SpringSessionDataGeodeJavaConfigP2pSample", logLevel = "error") // <1>
 @EnableGemFireHttpSession // <2>
 public class Config {