PMM-14717 Fix missing find action on system.profile in MongoDB monitoring role

documentation/docs/install-pmm/install-pmm-client/connect-database/mongodb.md

@@ -44,7 +44,7 @@ db.getSiblingDB("admin").createRole({
     },
     {
     "resource": { "db": "", "collection": "system.profile" },
-    "actions": [ "dbStats", "collStats", "indexStats" ]
+    "actions": [ "find", "dbStats", "collStats", "indexStats" ]
     }         
 ],
 "roles": [ ]

documentation/docs/quickstart/quickstart.md

@@ -254,7 +254,7 @@ Once PMM is set up, choose the database or the application that you want it to m
                },
                {
                  "resource": { "db": "", "collection": "system.profile" },
-                 "actions": [ "dbStats", "collStats", "indexStats" ]
+                 "actions": [ "find", "dbStats", "collStats", "indexStats" ]
                }                  
             ],
             "roles": []

documentation/docs/release-notes/3.9.0.md

@@ -53,6 +53,8 @@ For the full list of available collectors per database type, see [Connect MySQL
 
 ## ✅ Fixed issues
 
+- [PMM-14717](https://perconadev.atlassian.net/browse/PMM-14717): Fixed a documentation issue in the [MongoDB connection guide](../install-pmm/install-pmm-client/connect-database/mongodb.md) where the `createRole` command was missing the `find` permission on `system.profile`, causing QAN to show no query data. If you set up MongoDB monitoring using the previous instructions, re-run the role creation with the corrected command.
+
 - [PMM-14661](https://perconadev.atlassian.net/browse/PMM-14661): Fixed PMM Server becoming unresponsive when viewing stored metrics in Query Analytics for data older than one week.
 
 - [PMM-15029](https://perconadev.atlassian.net/browse/PMM-15029): Fixed an issue where the auto-generated PostgreSQL password for PMM HA could contain `:` or `@` characters, producing an invalid URI and preventing Grafana from connecting to the database on startup.
@@ -74,4 +76,8 @@ For the full list of available collectors per database type, see [Connect MySQL
 - [PMM-15114](https://perconadev.atlassian.net/browse/PMM-15114): Fixed the **Scanned and Moved Objects** panel in the **MongoDB Instance Summary** dashboard showing blank labels in the legend instead of the operation type (`scanned`, `scanned_objects`).  
 
 
+## 🚀 Ready to upgrade to PMM 3.9.0?
 
+- [New installation](../quickstart/quickstart.md)
+- [Upgrading from PMM 3](../pmm-upgrade/index.md)
+- [Upgrading from PMM 2](../pmm-upgrade/migrating_from_pmm_2.md)