fix(urls): address review nits

Rename catalyrst -> catalyst in the base-domain doc and drop the
ReSharper CheckNamespace suppression from the new characterization test.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: eordano

Explorer/Assets/DCL/NetworkDefinitions/Browser/Tests/DecentralandUrlsSourceCharacterizationShould.cs

@@ -6,7 +6,6 @@
 using System.Collections;
 using System.Collections.Generic;
 
-// ReSharper disable once CheckNamespace
 namespace DCL.Browser.DecentralandUrls.Tests
 {
     /// <summary>

docs/base-domain-generalization.md

@@ -29,7 +29,7 @@ app arg, instead of only `decentraland.{org,zone,today}`.
   `gateway.decentraland.{ENV}/…`, then `ResolveDomain` substitutes the whole
   `decentraland.{ENV}` token (gateway host included) — so a `--base-domain`
   deployment routes supported hosts through `gateway.{base-domain}/…`, letting
-  the catalyrst gateway proxy them (comms-gatekeeper included). New tests pin the
+  the catalyst gateway proxy them (comms-gatekeeper included). New tests pin the
   gatekeeper family (`GateKeeperSceneAdapter`, `ChatAdapter`, `GatekeeperStatus`,
   `BannedUsers`) routing through the gateway on both default and custom domains.
 - **comms-gatekeeper** stays independently overridable via the existing