Fix template_comments and comments with formatting

src/invidious.cr

@@ -589,7 +589,8 @@ get "/api/v1/comments/:id" do |env|
                 end
 
                 content_text = item_comment["contentText"]["simpleText"]?.try &.as_s.rchop('\ufeff')
-                content_text ||= item_comment["contentText"]["runs"][0]["text"].as_s.rchop('\ufeff')
+                content_text ||= item_comment["contentText"]["runs"].as_a.map { |comment| comment["text"] }
+                  .join("").rchop('\ufeff')
 
                 json.field "author", item_comment["authorText"]["simpleText"]
                 json.field "authorThumbnails" do

src/invidious/helpers.cr

@@ -526,6 +526,7 @@ def template_youtube_comments(comments)
               onclick="load_comments(this)">View #{child["replies"]["replyCount"]} replies</a>
           </p>
         </div>
+      </div>
       END_HTML
     end