Polish Javadoc

spring-core/src/main/java/org/springframework/core/env/AbstractPropertyResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -128,7 +128,7 @@ public abstract class AbstractPropertyResolver implements ConfigurablePropertyRe
 	 * Specify the escape character to use to ignore placeholder prefix
 	 * or value separator, or {@code null} if no escaping should take
 	 * place.
-	 * <p>The default is "\".
+	 * <p>The default is '\'.
 	 * @since 6.2
 	 * @see org.springframework.util.SystemPropertyUtils#ESCAPE_CHARACTER
 	 */