Remove “on The Graph Network and the hosted service” because not all …

…networks are supported on both

website/pages/en/index.json

@@ -69,7 +69,7 @@
   },
   "supportedNetworks": {
     "title": "Supported Networks",
-    "description": "The Graph supports the following networks on The Graph Network and the hosted service.",
+    "description": "The Graph supports the following networks.",
     "footer": "For more details, see the {0} page."
   }
 }