docs: Add docs for Amazon Managed Prometheus (#2777)

adding AMP doc

Signed-off-by: Kevin Lewin <lewinke@amazon.com>

docs/analysis/prometheus.md

@@ -34,7 +34,26 @@ you validate your [PromQL expression](https://prometheus.io/docs/prometheus/late
 
 See the [Analysis Overview page](../../features/analysis) for more details on the available options.
 
+## Utilizing Amazon Managed Prometheus
+
+Amazon Managed Prometheus can be used as the prometheus data source for analysis. In order to do this the namespace where you analysis is running will have to have the appropriate [IRSA attached](https://docs.aws.amazon.com/prometheus/latest/userguide/AMP-onboard-ingest-metrics-new-Prometheus.html#AMP-onboard-new-Prometheus-IRSA) to allow for prometheus queries. Once you ensure the proper permissions are in place to access AMP, you can use an AMP workspace url in your ```provider``` block:
+
+```yaml
+provider:
+  prometheus:
+    address: https://aps-workspaces.$REGION.amazonaws.com/workspaces/$WORKSPACEID
+    query: |
+      sum(irate(
+        istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}",response_code!~"5.*"}[5m]
+      )) /
+      sum(irate(
+        istio_requests_total{reporter="source",destination_service=~"{{args.service-name}}"}[5m]
+      ))
+```
+
 # Additional Metadata
 
 Any additional metadata from the Prometheus controller, like the resolved queries after substituting the template's
 arguments, etc. will appear under the `Metadata` map in the `MetricsResult` object of `AnalysisRun`.
+
+