Update _config.yml

Author: daattali

_config.yml

@@ -82,7 +82,7 @@ social-network-links:
 #  gitlab: yourname
 #  itchio: yourname
 #  untappd: yourname
-#  strava: your userid
+#  strava: youruserid
 
 # If you want your website to generate an RSS feed, provide a description
 # The URL for the feed will be https://<your_website>/feed.xml