Add QueryPlan warning in logging page for mx 11 as well

Author: passalaqua

content/en/docs/refguide/runtime/logging/_index.md

@@ -68,7 +68,7 @@ This list is currently incomplete and is being updated.
 | Connector | Logs when standard or custom request handlers (added through Core#addRequestHandler) are registered, or when a path is called that does not have a registered request handler. |
 | Core | Logs messages from the core runtime. This can be startup of the runtime, version of the runtime, license being used and issues related to interpreting the model. |
 | DataStorage_QueryHandling | Logs messages related to the queries that are being executed. |
-| DataStorage_QueryPlan | Query execution plan information for installations (currently only supported for PostgreSQL databases). |
+| DataStorage_QueryPlan | Query execution plan information for installations (currently only supported for PostgreSQL databases). {{% alert color="warning" %}}The `DataStorage_QueryPlan` log node has a very large performance impact and should never be enabled in production.{{% /alert %}} |
 | DocumentExporter | Logs messages related to the templating engine that generates documents. |
 | FileDocumentSizesPopulateJob | Logs messages for a background job that populates the file-size field in the database for documents that do not have that field filled (used during legacy migration). |
 | InvalidRequestLimiter | Logs messages related to responses being throttled due to invalid requests. |