Change 'videoThumbnails' to an array everywhere

src/invidious.cr

@@ -1971,6 +1971,7 @@ get "/api/v1/videos/:id" do |env|
                   ]
                   json.array do
                     qualities.each do |quality|
+                      json.object do
                         json.field "quality", quality[:name]
                         json.field "url", "https://i.ytimg.com/vi/#{rv["id"]}/#{quality["url"]}.jpg"
                         json.field "width", quality[:width]
@@ -1978,6 +1979,7 @@ get "/api/v1/videos/:id" do |env|
                       end
                     end
                   end
+                end
                 json.field "author", rv["author"]
                 json.field "lengthSeconds", rv["length_seconds"].to_i
                 json.field "viewCountText", rv["short_view_count_text"].rchop(" views")
@@ -2403,14 +2405,14 @@ get "/api/v1/search" do |env|
           json.field "authorUrl", "/channel/#{video.ucid}"
 
           json.field "videoThumbnails" do
-            json.object do
             qualities = [{name: "default", url: "default", width: 120, height: 90},
                          {name: "high", url: "hqdefault", width: 480, height: 360},
                          {name: "medium", url: "mqdefault", width: 320, height: 180},
             ]
+            json.array do
               qualities.each do |quality|
-                json.field quality[:name] do
                 json.object do
+                  json.field "quality", quality[:name]
                   json.field "url", "https://i.ytimg.com/vi/#{video.id}/#{quality["url"]}.jpg"
                   json.field "width", quality[:width]
                   json.field "height", quality[:height]
@@ -2418,7 +2420,6 @@ get "/api/v1/search" do |env|
               end
             end
           end
-          end
 
           json.field "description", video.description
           json.field "descriptionHtml", video.description_html