docs: Update commands in Consuming.md

- Update docker command to volume in keycloak_data.yaml.
  - Command fails to run if this file isn't present.
- Update otdfctl client-credentials command.
- Created issue opentdf#1785, that came up when testing this documentation.
  - Specifically, when the otdfctl command tries to run it fails due to it looking for the keycloak host instead of localhost.

Consuming.md

@@ -14,6 +14,7 @@ To contribute/develop, see [here](./Contributing.md).
    ```sh
    docker run --network opentdf_platform \
          -v "$(pwd)/opentdf.yaml:/home/nonroot/.opentdf/opentdf.yaml" \
+         -v "$(pwd)/service/cmd/keycloak_data.yaml:/service/cmd/keycloak_data.yaml" \
          -it registry.opentdf.io/platform:nightly provision keycloak -e http://keycloak:8888/auth
    ```
 1. Start the platform
@@ -34,7 +35,7 @@ You can now access platform services at http://localhost:8080/ , and Keycloak at
 ##  Next steps
 * Try out our CLI (`otdfctl`): https://github.com/opentdf/otdfctl
    ```sh
-   otdfctl auth client-credentials --host http://localhost:8080 --client-id opentdf --client-secret secret
+   otdfctl auth client-credentials --host http://localhost:8080 opentdf secret
    ```
 * Join our slack channel ([click here](https://join.slack.com/t/opentdf/shared_invite/zt-1e3jhnedw-wjviK~qRH_T1zG4dfaa~3A))
 * Connect with the team