/**
* Splitter corresponding to {@code key-arg} ABNF as defined
- * in <a href="https://tools.ietf.org/html/rfc6020#section-12">RFC6020, section 12</a>:
+ * in <a href="https://www.rfc-editor.org/rfc/rfc6020#section-12">RFC6020, section 12</a>:
*
* <p>
* {@code key-arg = node-identifier *(sep node-identifier)}