Reference to RFC5424 severity levels is incorrect

Problem/Motivation

core/lib/Drupal/Core/Logger/RfcLogLevel.php docs reference log severity levels as defined in RFC 5424 section 4.1.1. However, there is no such section. Section 4.1 describes Example Deployment Scenarios. Section 6.2.1 defines Syslog Message Severities. The attached patch corrects the RFC reference to be 6.2.1, and changes the associated link.

Steps to reproduce

View docs in core/lib/Drupal/Core/Logger/RfcLogLevel.php

Proposed resolution

Fix reference to correct section in RFC 5424.

Remaining tasks

Confirm new reference.

User interface changes

Nil.

API changes

Nil.

Data model changes

Nil.

Release notes snippet

Fix reference to logging severity levels in RFC 5424 (corrected to section 6.2.1).