Fixed ownership mapping for the routing area (#59556)

Author: mkArtakMSFT

.github/CODEOWNERS

@@ -29,8 +29,8 @@
 /src/Hosting/**/PublicAPI.*Shipped.txt                                            @dotnet/aspnet-api-review
 /src/Http/                                                                        @BrennanConroy @halter73 @captainsafia
 /src/Http/**/PublicAPI.*Shipped.txt                                               @dotnet/aspnet-api-review @BrennanConroy
-/src/Http/Routing/                                                                @javiercn
-/src/Http/Routing/**/PublicAPI.*Shipped.txt                                       @dotnet/aspnet-api-review @javiercn
+/src/Http/Routing/                                                                @halter73
+/src/Http/Routing/**/PublicAPI.*Shipped.txt                                       @dotnet/aspnet-api-review @halter73
 /src/HttpClientFactory/                                                           @captainsafia @halter73
 /src/HttpClientFactory/**/PublicAPI.*Shipped.txt                                  @dotnet/aspnet-api-review @captainsafia @halter73
 /src/Installers/                                                                  @dotnet/aspnet-build @wtgodbe