Add redirect for ML Dashboard (#4294)

Relates to issue opensearch-project/ml-commons-dashboards#208

Signed-off-by: Naarcha-AWS <97990722+Naarcha-AWS@users.noreply.github.com>
(cherry picked from commit a01ef06)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

_ml-commons-plugin/ml-dashboard.md

@@ -2,6 +2,8 @@
 layout: default
 title: Managing ML models in OpenSearch Dashboards
 nav_order: 120
+redirect_from:
+  - /ml-commons-plugin/ml-dashbaord/
 ---
 
 Released in OpenSearch 2.6, the machine learning (ML) functionality in OpenSearch Dashboards is experimental and can't be used in a production environment. For updates or to leave feedback, see the [OpenSearch Forum discussion](https://forum.opensearch.org/t/feedback-ml-commons-ml-model-health-dashboard-for-admins-experimental-release/12494).