Merge pull request jellyfin#6175 from nielsvanvelzen/crobibero-is-stupid

Fix routeMediaSourceId route parameter in SubtitleController GetSubtitle

(cherry picked from commit 04daf0f)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

Jellyfin.Api/Controllers/SubtitleController.cs

@@ -196,7 +196,7 @@ public async Task<ActionResult> GetRemoteSubtitles([FromRoute, Required] string
         /// <param name="startPositionTicks">The start position of the subtitle in ticks.</param>
         /// <response code="200">File returned.</response>
         /// <returns>A <see cref="FileContentResult"/> with the subtitle file.</returns>
-        [HttpGet("Videos/{routeItemId}/routeMediaSourceId/Subtitles/{routeIndex}/Stream.{routeFormat}")]
+        [HttpGet("Videos/{routeItemId}/{routeMediaSourceId}/Subtitles/{routeIndex}/Stream.{routeFormat}")]
         [ProducesResponseType(StatusCodes.Status200OK)]
         [ProducesFile("text/*")]
         public async Task<ActionResult> GetSubtitle(