Change test case for PornTrexIE

The video that we used to test the previous version of porntrex.py is no
longer on the website. This led to failures in the tests. Here we have a
corrected version with working URL.

youtube_dl/extractor/porntrex.py

@@ -46,13 +46,13 @@ class PornTrexIE(PornTrexBaseIE):
     _NETRC_MACHINE = 'porntrex'
     _VALID_URL = r'https?://(?:www\.)?porntrex\.com/video/(?P<id>[0-9]+)/'
     _TEST = {
-        'url': 'https://www.porntrex.com/video/350451/naomi-woods-the-list',
+        'url': 'https://www.porntrex.com/video/311136/naomi-gets-fingered-before-the-fucking',
         'info_dict': {
-            'id': '350451',
+            'id': '311136',
             'ext': 'mp4',
-            'title': 'Naomi Woods - The List in 4k',
-            'uploader': 'delman',
-            'description': 'Naomi Woods The List',
+            'title': 'Naomi gets fingered before the fucking',
+            'uploader': 'cumberland',
+            'description': 'Sexy brunette babe likes to get her tight cunt slammed in hardcore fashion.',
         }
     }