There are two problems in this line:
[%- create_guideline(l('Confirm by activating the checkbox below that you have read the

{doc_labelcomment|label comment guideline}

, understood how we distinguish labels with the same name, and that you know what you are doing.',

{doc_labelcomment => doc_link('Label_Comment')}

)) -%]

One is that it links to Label_Comment which hasn't existed for a while (it redirects to Disambiguation_Comment now). But the more problematic one is it claims that page, which is clearly documentation, is a guideline.