Replace Collections.sort() with direct sort call

Replace existing `Collections.sort(...)` calls with `.sort(...)`
directly on the collection instance.

See gh-9781

spring-boot-actuator-docs/src/restdoc/java/org/springframework/boot/actuate/hypermedia/EndpointDocumentation.java

@@ -199,7 +199,7 @@ public class EndpointDocumentation {
 	private Collection<? extends MvcEndpoint> getEndpoints() {
 		List<? extends MvcEndpoint> endpoints = new ArrayList<>(
 				this.mvcEndpoints.getEndpoints());
-		Collections.sort(endpoints, new Comparator<MvcEndpoint>() {
+		endpoints.sort(new Comparator<MvcEndpoint>() {
 			@Override
 			public int compare(MvcEndpoint o1, MvcEndpoint o2) {
 				return o1.getPath().compareTo(o2.getPath());