Update documentation to add skills plugin to bundled plugins (opensea…

…rch-project#7269)

Signed-off-by: zane-neo <[email protected]>

_install-and-configure/plugins.md

@@ -285,6 +285,7 @@ The following plugins are bundled with all OpenSearch distributions except for m
 | Job Scheduler | [opensearch-job-scheduler](https://github.com/opensearch-project/job-scheduler) | 1.0.0 |
 | k-NN | [opensearch-knn](https://github.com/opensearch-project/k-NN) | 1.0.0 |
 | ML Commons | [opensearch-ml](https://github.com/opensearch-project/ml-commons) | 1.3.0 |
+| Skills | [opensearch-skills](https://github.com/opensearch-project/skills) | 2.12.0 |
 | Neural Search | [neural-search](https://github.com/opensearch-project/neural-search) | 2.4.0 |
 | Observability | [opensearch-observability](https://github.com/opensearch-project/observability) | 1.2.0 |
 | Performance Analyzer<sup>2</sup> | [opensearch-performance-analyzer](https://github.com/opensearch-project/performance-analyzer) | 1.0.0 |