Reverted Spotify Content URL to previous version (with a slight modification).

Author: tomasfn87

index.html

@@ -98,7 +98,7 @@ <h2>Analysis Result:</h2>
             YouTubePlaylist: /(https?:\/\/)?((?:www|m)\.)?youtu(\.be|be\.com)\/?.*?list=([0-9A-Za-z_-]+)/i,
             YouTubeUser: /(https?:\/\/)?((?:www|m)\.)?youtu(\.be|be\.com)\/?.*@([^\/?#=]+).*/i,
             VimeoVideo: /(https?:\/\/)?(\w+\.)?vimeo.com\/(\d+)/i,
-            SpotifyContent: /(?:https?:\/\/)?(?:open\.)?spotify(?:\.com)?[:\/](album|artist|episode|playlist|show|track)[:\/]([^ \/?&#=]+)([\/\?\S+])?/i,
+            SpotifyContent: /(?:https?:\/\/)?(?:\w+\.)?spotify.com\/.*(track|episode|playlist|album|artist|show)\/([^\/?#=]+)\S*/i,
             SpotifyUri: /spotify:(album|artist|episode|playlist|show|track):([^ \/?&#=]+)/i
         };