Remove incorrect reference URL.

* Version 3.4.1 does not include the patch commit.

Author: postmodern

gems/discordrb/CVE-2023-28102.yml

@@ -13,5 +13,4 @@ related:
   url:
     - https://nvd.nist.gov/vuln/detail/CVE-2023-28102
     - https://securitylab.github.com/advisories/GHSL-2022-094_discordrb
-    - https://github.com/shardlab/discordrb/releases/tag/v3.4.1
     - https://rubygems.org/gems/discordrb