Fix mongodb/connector recipe: correct version floor to v1.6.0+ (#475)

The MongoDB data connector was introduced in v1.6.0, but the recipe
claimed 'Works with v1.0+'. Also remove two stale log lines from the
expected 'spice run' output that no longer appear in v2.0 (the metrics
server is off by default and the OpenTelemetry log line was removed),
and fix duplicate 'Step 6.' numbering.

Co-authored-by: Claude <claude@Claudes-Mac-mini.local>

Author: claudespice

mongodb/connector/README.md

@@ -1,6 +1,6 @@
 # MongoDB Data Connector
 
-Works with `v1.0+`
+Works with `v1.6.0+`
 
 This recipe will use a demo instance of MongoDB with a generated dataset. Follow the recipe to create MongoDB instance and get started with MongoDB as a Data Connector.
 
@@ -130,10 +130,8 @@ Confirm in the terminal output the `sample_data` dataset has been loaded:
 ```bash
 2025/01/13 11:52:51 INFO Spice.ai runtime starting...
 2025-01-13T19:52:51.473621Z  INFO runtime::init::dataset: Initializing dataset sample_data
-2025-01-13T19:52:51.474059Z  INFO runtime::metrics_server: Spice Runtime Metrics listening on 127.0.0.1:9090
 2025-01-13T19:52:51.474795Z  INFO runtime::http: Spice Runtime HTTP listening on 127.0.0.1:8090
 2025-01-13T19:52:51.474869Z  INFO runtime::flight: Spice Runtime Flight listening on 127.0.0.1:50051
-2025-01-13T19:52:51.481201Z  INFO runtime::opentelemetry: Spice Runtime OpenTelemetry listening on 127.0.0.1:50052
 2025-01-13T19:52:51.491591Z  INFO runtime::init::dataset: Dataset sample_data registered (mongodb:sample_data).
 2025-01-13T19:52:51.673260Z  INFO runtime::init::results_cache: Initialized results cache; max size: 128.00 MiB, item ttl: 1s
 ```
@@ -177,7 +175,7 @@ Time: 0.011687958 seconds. 10 rows.
 
 For more information on using `spice sql`, see the [CLI reference](https://docs.spiceai.org/cli/reference/sql).
 
-**Step 6.** Cleanup
+**Step 7.** Cleanup
 
 ```bash
 docker rm -f mongodb-cookbook