Apply suggestions from code review

src/invidious/frontend/comments_youtube.cr

@@ -149,7 +149,7 @@ module Invidious::Frontend::Comments
 
         if comments["videoId"]?
           html << <<-END_HTML
-            <a rel="noreferrer noopener" href="#{YT_URL.to_s}/watch?v=#{comments["videoId"]}&lc=#{child["commentId"]}" title="#{translate(locale, "YouTube comment permalink")}">[YT]</a>
+            <a rel="noreferrer noopener" href="https://www.youtube.com/watch?v=#{comments["videoId"]}&lc=#{child["commentId"]}" title="#{translate(locale, "YouTube comment permalink")}">[YT]</a>
             |
           END_HTML
         elsif comments["authorId"]?

src/invidious/views/watch.ecr

@@ -26,7 +26,7 @@
 <meta name="twitter:player" content="<%= HOST_URL %>/embed/<%= video.id %>">
 <meta name="twitter:player:width" content="1280">
 <meta name="twitter:player:height" content="720">
-<link rel="alternate noreferrer noopener" href="https://www.youtube.com/watch?v=<%= video.id %>">
+<link rel="alternate" href="https://www.youtube.com/watch?v=<%= video.id %>">
 <%= rendered "components/player_sources" %>
 <title><%= title %> - Invidious</title>