[spankbang] Extend format id regex (Closes #8398)

youtube_dl/extractor/spankbang.py

@@ -34,7 +34,7 @@ class SpankBangIE(InfoExtractor):
             'ext': 'mp4',
             'format_id': '%sp' % height,
             'height': int(height),
-        } for height in re.findall(r'<(?:span|li)[^>]+q_(\d+)p', webpage)]
+        } for height in re.findall(r'<(?:span|li|p)[^>]+[qb]_(\d+)p', webpage)]
         self._sort_formats(formats)
 
         title = self._html_search_regex(