Fix annotation styling issues

Update all annotations so that each is on its own line and
consistently use the short form (i.e. don't use `value=`) when
possible.

Issue: SPR-16968

spring-web/src/main/java/org/springframework/web/util/ServletContextPropertyUtils.java

@@ -93,7 +93,7 @@ public abstract class ServletContextPropertyUtils {
             this.servletContext = servletContext;
         }
 
-        @Override
+		@Override
 		@Nullable
 		public String resolvePlaceholder(String placeholderName) {
             try {