Update _config.yml

Make claimed default and actual default consistent

Author: manuelhaussmann

_config.yml

@@ -137,7 +137,7 @@ social:
 
 # Analytics
 analytics:
-  provider               :  "google-universal" # false (default), "google", "google-universal", "google-analytics-4", "custom"
+  provider               :  "false" # false (default), "google", "google-universal", "google-analytics-4", "custom"
   google:
     tracking_id          :