Update 104-ht_ww.md

fixed typo in sample WW config

docs/104-ht_ww.md

@@ -40,7 +40,7 @@ Add the following to your `~/.config/mycroft/mycroft.conf` file.
                 "hey ziggy",
                 "hay ziggy"
                 ],
-            "thresh": 80
+            "threshold": 80
         }
     }
 }