Bug 1915702 - Update OHTTP Relay Url used by Shopping component r=bholley,fchasen,Gijs

For consistency with other uses of OHTTP in Firefox, update the URL. Both old
and new URL are aliases for the same server so behaviours are the same.

Differential Revision: https://phabricator.services.mozilla.com/D220618

modules/libpref/init/all.js

@@ -544,7 +544,7 @@ pref("toolkit.scrollbox.scrollIncrement", 20);
 pref("toolkit.scrollbox.clickToScroll.scrollDelay", 150);
 
 pref("toolkit.shopping.ohttpConfigURL", "https://prod.ohttp-gateway.prod.webservices.mozgcp.net/ohttp-configs");
-pref("toolkit.shopping.ohttpRelayURL", "https://mozilla-ohttp-fakespot.fastly-edge.com/");
+pref("toolkit.shopping.ohttpRelayURL", "https://mozilla-ohttp.fastly-edge.com/");
 pref("toolkit.shopping.environment", "prod");
 
 // Controls logging for Sqlite.sys.mjs.