fixed typo in dredd config

Author: iolufemi

dredd.yml

@@ -33,4 +33,4 @@ hooks-worker-handler-host: 127.0.0.1
 hooks-worker-handler-port: 61321
 config: ./dredd.yml
 blueprint: apiary.apib
-endpoint: 'htto://127.0.0.1:8080'
+endpoint: 'http://127.0.0.1:8080'