fix the route of audio containers

Jellyfin.Api/Controllers/UniversalAudioController.cs

@@ -88,16 +88,14 @@ namespace Jellyfin.Api.Controllers
         /// <response code="302">Redirected to remote audio stream.</response>
         /// <returns>A <see cref="Task"/> containing the audio file.</returns>
         [HttpGet("Audio/{itemId}/universal")]
-        [HttpGet("Audio/{itemId}/universal.{container}", Name = "GetUniversalAudioStream_2")]
         [HttpHead("Audio/{itemId}/universal", Name = "HeadUniversalAudioStream")]
-        [HttpHead("Audio/{itemId}/universal.{container}", Name = "HeadUniversalAudioStream_2")]
         [Authorize(Policy = Policies.DefaultAuthorization)]
         [ProducesResponseType(StatusCodes.Status200OK)]
         [ProducesResponseType(StatusCodes.Status302Found)]
         [ProducesAudioFile]
         public async Task<ActionResult> GetUniversalAudioStream(
             [FromRoute, Required] Guid itemId,
-            [FromRoute] string? container,
+            [FromQuery] string? container,
             [FromQuery] string? mediaSourceId,
             [FromQuery] string? deviceId,
             [FromQuery] Guid? userId,