fix: format duration in rss feed

Author: Bnyro

src/main/java/me/kavin/piped/utils/ChannelHelpers.java

@@ -8,6 +8,7 @@
 import me.kavin.piped.utils.obj.db.Video;
 import okhttp3.Request;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.time.DurationFormatUtils;
 import org.apache.commons.text.StringEscapeUtils;
 import org.hibernate.StatelessSession;
 
@@ -86,7 +87,7 @@ public static SyndEntry createEntry(Video video, Channel channel) {
         entry.setTitle(video.getTitle());
         entry.setPublishedDate(new Date(video.getUploaded()));
 
-        String contentText = String.format("Title: %s\nViews: %d\nId: %s\nDuration: %d\nIs YT Shorts: %b", video.getTitle(), video.getViews(), video.getId(), video.getDuration(), video.isShort());
+        String contentText = String.format("Title: %s\nViews: %d\nId: %s\nDuration: %s\nIs YT Shorts: %b", video.getTitle(), video.getViews(), video.getId(), DurationFormatUtils.formatDuration(video.getDuration() * 1000, "[HH]':'mm':'ss"), video.isShort());
         content.setValue(contentText);
 
         String thumbnailContent =