fixup! Also generate social image for blog posts

Author: gastaldi

_plugins/social_images.rb

@@ -8,8 +8,7 @@ module SocialImages
     def social_image(text, page_path)
       # If text is not empty, return it
       if text.nil? || text.empty?
-        # If page_path contains "guides/", return the social image path
-        if page_path.include?('guides/')
+        if File.exist?("./assets/images/social/#{File.basename(page_path, '.adoc')}.png")
           return "/assets/images/social/#{File.basename(page_path, '.adoc')}.png"
         else
           return "/assets/images/quarkus_card.png"