Review fixes for spring-security-config-6.0:javaagent (#17741)

Co-authored-by: otelbot <197425009+otelbot@users.noreply.github.com>

Author: otelbot[bot]

instrumentation/spring/spring-security-config-6.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/spring/security/config/v6_0/EnduserAttributesCapturerSingletons.java

@@ -13,13 +13,13 @@
 
 public class EnduserAttributesCapturerSingletons {
 
-  private static final EnduserAttributesCapturer ENDUSER_ATTRIBUTES_CAPTURER =
+  private static final EnduserAttributesCapturer enduserAttributesCapturer =
       createEndUserAttributesCapturerFromConfig();
 
   private EnduserAttributesCapturerSingletons() {}
 
   public static EnduserAttributesCapturer enduserAttributesCapturer() {
-    return ENDUSER_ATTRIBUTES_CAPTURER;
+    return enduserAttributesCapturer;
   }
 
   private static EnduserAttributesCapturer createEndUserAttributesCapturerFromConfig() {

instrumentation/spring/spring-security-config-6.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/spring/security/config/v6_0/servlet/SpringSecurityConfigServletInstrumentationModule.java

@@ -48,6 +48,7 @@ public ElementMatcher.Junction<ClassLoader> classLoaderMatcher() {
      * since Spring Security >= 6.0 uses Jakarta EE rather than Java EE,
      * and this instrumentation module uses Jakarta EE.
      */
+    // added in 6.0
     return hasClassesNamed(
         "org.springframework.security.authentication.ObservationAuthenticationManager");
   }

instrumentation/spring/spring-security-config-6.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/spring/security/config/v6_0/webflux/SpringSecurityConfigWebFluxInstrumentationModule.java

@@ -29,10 +29,13 @@ public SpringSecurityConfigWebFluxInstrumentationModule() {
 
   @Override
   public ElementMatcher.Junction<ClassLoader> classLoaderMatcher() {
-    // Ensure this module is only applied to Spring Security >= 6.0. This instrumentation might
-    // work with older versions of Spring Security, but since it is bundled together with the
-    // servlet based instrumentation, that does not work with oder versions, we also limit this
-    // module to only work with Spring Security >= 6.0.
+    /*
+     * Ensure this module is only applied to Spring Security >= 6.0. This instrumentation might
+     * work with older versions of Spring Security, but since it is bundled together with the
+     * servlet-based instrumentation, which does not work with older versions, we also limit this
+     * module to only work with Spring Security >= 6.0.
+     */
+    // added in 6.0
     return hasClassesNamed(
         "org.springframework.security.authentication.ObservationAuthenticationManager");
   }