Modify rule S6376: Fix broken link (#4208)

rules/S6376/java/rule.adoc

@@ -6,7 +6,7 @@ XML files are complex data structures. When a malicious user is able to submit a
 
 === What is the potential impact?
 
-When an attacker successfully exploits the vulnerability, it can lead to a Denial of Service (DoS) condition. 
+When an attacker successfully exploits the vulnerability, it can lead to a Denial of Service (DoS) condition.
 
 === System Unavailability
 
@@ -32,7 +32,7 @@ include::how-to-fix-it/jdom2.adoc[]
 * Java Documentation - https://docs.oracle.com/en/java/javase/21/docs/api/java.xml/javax/xml/transform/TransformerFactory.html[TransformerFactory Class]
 * Java Documentation - https://docs.oracle.com/en/java/javase/21/security/java-api-xml-processing-jaxp-security-guide.html[Java API for XML Processing (JAXP) Security Guide]
 * Dom4j Documentation - https://dom4j.github.io/javadoc/2.1.4/org/dom4j/io/SAXReader.html[SAXReader Class]
-* Jdom2 Documentation - http://www.jdom.org/docs/apidocs/org/jdom2/input/SAXBuilder.html[SAXBuilder class]
+* Jdom2 Documentation - https://javadoc.io/static/org.jdom/jdom2/2.0.6.1/org/jdom2/input/SAXBuilder.html[SAXBuilder class]
 * OWASP - https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html#java[XXE Prevention Cheat Sheet]
 
 === Standards