production/search: Update read-only search url

It's no longer the one running in moma which will soon be decommissioned.

Refs. swh/infra/sysadm-environment#5110

docs/sysadm/network-architecture/service-urls.rst

@@ -149,10 +149,10 @@ Internal services
 +-----------------------------+-----------------------------------------------------------------+--------+------------+
 | swh-counters                | http://counters1.internal.softwareheritage.org:5011             | X      |            |
 +-----------------------------+-----------------------------------------------------------------+--------+------------+
-| swh-search                  | http://moma.internal.softwareheritage.org:5010                  | X      |            |
-+-----------------------------+-----------------------------------------------------------------+--------+------------+
 | swh-search                  | http://search1.internal.softwareheritage.org:5010               |        | X          |
 +-----------------------------+-----------------------------------------------------------------+--------+------------+
+| swh-search read-only        | http://search.internal.softwareheritage.org                     | X      |            |
++-----------------------------+-----------------------------------------------------------------+--------+------------+
 | swh-graph rpc               | http://granet.internal.softwareheritage.org:5009                | X      |            |
 +-----------------------------+-----------------------------------------------------------------+--------+------------+
 | swh-graph grpc              | http://granet.internal.softwareheritage.org:50091               | X      |            |