[yandexmusic] Clarify blockage even more

youtube_dl/extractor/yandexmusic.py

@@ -27,9 +27,12 @@ class YandexMusicBaseIE(InfoExtractor):
         webpage = super(YandexMusicBaseIE, self)._download_webpage(*args, **kwargs)
         if 'Нам очень жаль, но запросы, поступившие с вашего IP-адреса, похожи на автоматические.' in webpage:
             raise ExtractorError(
-                'YandexMusic asks you to solve a CAPTCHA: go to '
-                'https://music.yandex.ru/ and solve it, then export '
-                'cookies and pass cookie file to youtube-dl with --cookies',
+                'YandexMusic has considered youtube-dl requests automated and '
+                'asks you to solve a CAPTCHA. You can either wait for some '
+                'time until unblocked and optionally use --sleep-interval '
+                'in future or alternatively you can go to https://music.yandex.ru/ '
+                'solve CAPTCHA, then export cookies and pass cookie file to '
+                'youtube-dl with --cookies',
                 expected=True)
         return webpage