Updating QueryPlanningTool documentation (#11133)

* Updating QueryPlanningTool documentation

Signed-off-by: Joshua Palis <jpalis@amazon.com>

* Updating QueryPlanningTool registration parameters

Signed-off-by: Joshua Palis <jpalis@amazon.com>

* Updating documentation, removing experimental mentions, addressing comments

Signed-off-by: Joshua Palis <jpalis@amazon.com>

* Doc review

Signed-off-by: Fanit Kolchina <kolchfa@amazon.com>

* Update _ml-commons-plugin/agents-tools/tools/query-planning-tool.md

Signed-off-by: kolchfa-aws <105444904+kolchfa-aws@users.noreply.github.com>

* Apply suggestions from code review

Signed-off-by: Nathan Bower <nbower@amazon.com>

---------

Signed-off-by: Joshua Palis <jpalis@amazon.com>
Signed-off-by: Fanit Kolchina <kolchfa@amazon.com>
Signed-off-by: kolchfa-aws <105444904+kolchfa-aws@users.noreply.github.com>
Signed-off-by: Nathan Bower <nbower@amazon.com>
Co-authored-by: Fanit Kolchina <kolchfa@amazon.com>
Co-authored-by: kolchfa-aws <105444904+kolchfa-aws@users.noreply.github.com>
Co-authored-by: Nathan Bower <nbower@amazon.com>

Author: 3 people

_ml-commons-plugin/agents-tools/tools/index.md

@@ -52,6 +52,7 @@ Each tool takes a list of parameters specific to that tool. In the preceding exa
 |[`VectorDBTool`]({{site.url}}{{site.baseurl}}/ml-commons-plugin/agents-tools/tools/vector-db-tool/)	|Performs dense vector retrieval.	|
 |[`VisualizationTool`]({{site.url}}{{site.baseurl}}/ml-commons-plugin/agents-tools/tools/visualization-tool/)	|Finds visualizations in OpenSearch Dashboards.	|
 |[`WebSearchTool`]({{site.url}}{{site.baseurl}}/ml-commons-plugin/agents-tools/tools/web-search-tool/)	|Answers a user's question using a web search.	|
+|[`QueryPlanningTool`]({{site.url}}{{site.baseurl}}/ml-commons-plugin/agents-tools/tools/query-planning-tool/)	|Creates and executes an OpenSearch DSL query based on a user's natural language question.	|
 
 ## Developer information