Move setBuildURLConfig according to guides (app.ts)

Author: Baltazore

translations/adapters/host-and-namespace/en-us.yaml

@@ -2,4 +2,4 @@ title: Default Host and Namespace
 description: >
   To set the default '<code>'host'</code>' and '<code>'namespace'</code>' for requests, you can use the '<code>'setBuildURLConfig'</code>' method of '<code>'@ember-data/request-utils'</code>' package.
   <br />
-  This is a module-level function, so you can do it anywhere in your application, i.e. in your '<code>'services/request-manager.js'</code>' or '<code>'services/store.js'</code>' file.
+  This is a module-level function, so you can do it anywhere in your application theoretically, but we recommend doing it in the '<code>'app/app.js'</code>' file