[README] Fix VALID_URL in extractor example

diff --git a/README.md b/README.md
index 1be46430b7ae3fc6211cb7a7ac5ec87fe00d0d18..1ba1486d2d2926259dcdfd2d7ad4fcd987ed1c77 100644 (file)
--- a/README.md
+++ b/README.md
@@ -384,10 +384,10 @@ If you want to add support for a new site, you can follow this quick list (assum
         import re
 
         from .common import InfoExtractor
-
-
+        
+        
         class YourExtractorIE(InfoExtractor):
-            _VALID_URL = r'https?://(?:www\.)yourextractor\.com/watch/(?P<id>[0-9]+)'
+            _VALID_URL = r'https?://(?:www\.)?yourextractor\.com/watch/(?P<id>[0-9]+)'
             _TEST = {
                 'url': 'http://yourextractor.com/watch/42',
                 'md5': 'TODO: md5 sum of the first 10KiB of the video file',