Fix lint and formatting

src/invidious.cr

@@ -250,7 +250,7 @@ Kemal.config.app_name = "Invidious"
 
 Kemal.run do |config|
   if socket_binding = CONFIG.socket_binding
-File.delete?(socket_binding.path)
+    File.delete?(socket_binding.path)
     # Create a socket and set its desired permissions
     server = UNIXServer.new(socket_binding.path)
     perms = socket_binding.permissions.to_i(base: 8)

src/invidious/jobs/notification_job.cr

@@ -40,7 +40,7 @@ class Invidious::Jobs::NotificationJob < Invidious::Jobs::BaseJob
         hash[key] = Set(VideoNotification).new
       }
     )
-    notify_mutex = Mutex.new()
+    notify_mutex = Mutex.new
 
     # fiber to locally cache all incoming notifications (from pubsub webhooks and refresh channels job)
     spawn do
@@ -71,7 +71,7 @@ class Invidious::Jobs::NotificationJob < Invidious::Jobs::BaseJob
 
             LOGGER.info("NotificationJob: updating channel #{channel_id} with #{notifications.size} notifications")
             if CONFIG.enable_user_notifications
-              video_ids = notifications.map { |n| n.video_id }
+              video_ids = notifications.map(&.video_id)
               Invidious::Database::Users.add_multiple_notifications(channel_id, video_ids)
               PG_DB.using_connection do |conn|
                 notifications.each do |n|