Fix method-security sample

Author: eleftherias

spring-graalvm-native-samples/security-method/compile.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 ARTIFACT=security-method
-MAINCLASS=com.example.securingweb.SecuringWebApplication
+MAINCLASS=com.example.methodsecurity.MethodSecurityApplication
 VERSION=0.0.1-SNAPSHOT
 
 GREEN='\033[0;32m'

spring-graalvm-native-samples/security-method/verify.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-if [[ `cat target/native-image/test-output.txt | grep "Started SecuringWebApplication"` ]]; then
+if [[ `cat target/native-image/test-output.txt | grep "Started MethodSecurityApplication"` ]]; then
   exit 0
 else
   exit 1