[Obs Docs] Update Observability AI Assistant functions (#2005)

This PR closes #1990 and adds/removes AI Assistant functions.

Author: mdbirnstiehl

solutions/observability/observability-ai-assistant.md

@@ -278,32 +278,44 @@ Main functions:
 `alerts`
 :   Get alerts for {{observability}}.
 
+`changes`
+:   Get change points like spikes and dips for logs and metrics data.
+
 `elasticsearch`
 :   Call {{es}} APIs on your behalf.
 
+`execute_connector`
+:   Call a {{kib}} connector on your behalf.
+
+`get_alerts_dataset_info`
+:   Get information about alerts data within a specified time range.
+
+`get_data_on_screen`
+:   Get the structured data of content currently visible on the user's screen. Use this function to provide more accurate and context-aware responses to your questions.
+
+`get_dataset_info`
+:    Get information about available indices and datasets and their fields.
+
 `kibana`
 :   Call {{kib}} APIs on your behalf.
 
+`query`
+:   Generate, execute, and visualize queries based on your request.
+
+`retrieve_elastic_doc`
+:   Get relevant Elastic documentation. This function is only available if the product documentation is installed.
+
 `summarize`
 :   Summarize parts of the conversation.
 
-`visualize_query`
-:   Visualize charts for ES|QL queries.
-
 Additional functions are available when your cluster has APM data:
 
-`get_apm_correlations`
-:   Get field values that are more prominent in the foreground set than the background set. This can be useful in determining which attributes (such as `error.message`, `service.node.name`, or `transaction.name`) are contributing to, for instance, a higher latency. Another option is a time-based comparison, where you compare before and after a change point.
+`get_apm_dataset_info`
+:   Get information about APM data.
 
 `get_apm_downstream_dependencies`
 :   Get the downstream dependencies (services or uninstrumented backends) for a service. Map the downstream dependency name to a service by returning both `span.destination.service.resource` and `service.name`. Use this to drill down further if needed.
 
-`get_apm_error_document`
-:   Get a sample error document based on the grouping name. This also includes the stacktrace of the error, which might hint to the cause.
-
-`get_apm_service_summary`
-:   Get a summary of a single service, including the language, service version, deployments, the environments, and the infrastructure that it is running in. For example, the number of pods and a list of their downstream dependencies. It also returns active alerts and anomalies.
-
 `get_apm_services_list`
 :   Get the list of monitored services, their health statuses, and alerts.