Disable git tag conversion for Ruby 4.0+ (#3786)

Author: k0kubun

lib/release-template.erb

@@ -9,7 +9,7 @@ lang: en
 
 Ruby <%= version %> has been released.
 
-Please see the [GitHub releases](https://github.com/ruby/ruby/releases/tag/v<%= version.gsub(/\./, '_') %>) for further details.
+Please see the [GitHub releases](https://github.com/ruby/ruby/releases/tag/v<%= version.gsub(/\A3\.(\d)\./, '3_\1_') %>) for further details.
 
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