Add warehouse parameter to the REST Catalog doc (#2066)

# Rationale for this change

Missing parameter in REST Catalog documentation

# Are these changes tested?

Doc only

# Are there any user-facing changes?

Doc only

---------

Co-authored-by: Fokko Driesprong <fokko@apache.org>
Co-authored-by: Kevin Liu <kevinjqliu@users.noreply.github.com>

Author: 3 people

mkdocs/docs/configuration.md

@@ -351,6 +351,7 @@ catalog:
 | rest.signing-name   | execute-api                      | The service signing name to use when SigV4 signing a request                                       |
 | oauth2-server-uri   | <https://auth-service/cc>          | Authentication URL to use for client credentials authentication (default: uri + 'v1/oauth/tokens') |
 | snapshot-loading-mode | refs                             | The snapshots to return in the body of the metadata. Setting the value to `all` would return the full set of snapshots currently valid for the table. Setting the value to `refs` would load all snapshots referenced by branches or tags. |
+| warehouse          | myWarehouse                         | Warehouse location or identifier to request from the catalog service. May be used to determine server-side overrides, such as the warehouse location. |
 
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