Use generic url for thumbnails

src/invidious.cr

@@ -312,7 +312,7 @@ get "/watch" do |env|
   video.description = fill_links(video.description, "https", "www.youtube.com")
   video.description = add_alt_links(video.description)
 
-  thumbnail = "https://i1.ytimg.com/vi/#{id}/mqdefault.jpg"
+  thumbnail = "https://i.ytimg.com/vi/#{id}/mqdefault.jpg"
 
   templated "watch"
 end

src/views/index.ecr

@@ -8,7 +8,7 @@
     <div class="pure-u-1 pure-u-md-1-4">
         <div style="overflow-wrap:break-word; word-wrap:break-word;" class="h-box">
             <a style="width:100%;" href="/watch?v=<%= video.id %>">
-                <img style="width:100%;" src="https://i1.ytimg.com/vi/<%= video.id %>/mqdefault.jpg"/>
+                <img style="width:100%;" src="https://i.ytimg.com/vi/<%= video.id %>/mqdefault.jpg"/>
                 <p><%= video.title %></p>
             </a>
             <p>

src/views/search.ecr

@@ -8,7 +8,7 @@
     <div class="pure-u-1 pure-u-md-1-4">
         <div style="overflow-wrap:break-word; word-wrap:break-word;" class="h-box">
             <a style="width:100%;" href="/watch?v=<%= video["id"] %>">
-                <img style="width:100%;" src="https://i1.ytimg.com/vi/<%= video["id"] %>/mqdefault.jpg"/>
+                <img style="width:100%;" src="https://i.ytimg.com/vi/<%= video["id"] %>/mqdefault.jpg"/>
                 <p><%= video["title"] %></p>
             </a>
             <p>