add 576 resolution back to simple title regex

src/NzbDrone.Core/Parser/Parser.cs

@@ -97,7 +97,7 @@ namespace NzbDrone.Core.Parser
         private static readonly Regex ReportImdbId = new Regex(@"(?<imdbid>tt\d{7,8})", RegexOptions.IgnoreCase | RegexOptions.Compiled);
         private static readonly Regex ReportTmdbId = new Regex(@"tmdb(id)?-(?<tmdbid>\d+)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
-        private static readonly RegexReplace SimpleTitleRegex = new RegexReplace(@"(?:(480|540|720|1080|2160)[ip]|[xh][\W_]?26[45]|DD\W?5\W1|[<>?*]|848x480|1280x720|1920x1080|3840x2160|4096x2160|(8|10)b(it)?|10-bit)\s*?",
+        private static readonly RegexReplace SimpleTitleRegex = new RegexReplace(@"(?:(480|540|576|720|1080|2160)[ip]|[xh][\W_]?26[45]|DD\W?5\W1|[<>?*]|848x480|1280x720|1920x1080|3840x2160|4096x2160|(8|10)b(it)?|10-bit)\s*?",
                                                                 string.Empty,
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled);