Update Puli bindings for subnamespace

Author: ddeboer

puli.json

@@ -3,12 +3,12 @@
     "bindings": {
         "04b5a002-71a8-473d-a8df-75671551b84a": {
             "_class": "Puli\\Discovery\\Binding\\ClassBinding",
-            "class": "Http\\Adapter\\Guzzle6HttpAdapter",
+            "class": "Http\\Adapter\\Guzzle6\\Client",
             "type": "Http\\Client\\HttpClient"
         },
         "9c856476-7f6b-43df-a740-15420a5f839c": {
             "_class": "Puli\\Discovery\\Binding\\ClassBinding",
-            "class": "Http\\Adapter\\Guzzle6HttpAdapter",
+            "class": "Http\\Adapter\\Guzzle6\\Client",
             "type": "Http\\Client\\HttpAsyncClient"
         }
     }