Issue 5102 - Replaced semantically incorrect <hr> elements with :after styles

includes/tool-certification/summary.md

Index: includes/tool-certification/summary.md
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--- a/includes/tool-certification/summary.md
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 # {{acceptable-ads-tool[Acceptable Ads Tool Heading] <fix>Acceptable Ads</fix> Certification Tool}} <small>({{beta-label[beta label placed after heading] beta}})</small>
 
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 **{{reach-millions[Acceptable Ads Tool Subheading] Reach millions of ad-blocking users with pre-approved ads and one-tag implementation in minutes.}}**
 
 {{ads-dont-have-to-be-annoying[Acceptable Ads Tool paragraph 2] Ads don’t have to be annoying - even if you’re pushing for increased engagement, viewability and yield. Millions of users have installed ad blockers in what could be the greatest consumer revolt of all time; there is a way to win those picky users back with nonintrusive ads.}}
 
 {{adblock-plus-getting-users-back[Acceptable Ads Tool paragraph 3] Adblock Plus has been getting these users back with the Acceptable Ads initiative. The secret of the initiative is trust: users don’t have to take part, but because it’s on their own terms, most do. And yet, after over five years of existence, it was still a labor-intensive process for publishers and advertisers to join.}}
 
 {{acceptabl-ads-tool-wins[Acceptable Ads Tool paragraph 4] Not anymore. The Acceptable Ads Certification Tool (AACT) is an open infrastructure that validates Acceptable Ads and facilitates them being served using tools common to the ad tech industry.}}