Docs: adds evaluation doc (#70757)

* Docs: adds evaluation doc

* Adds note on classic condition

* fixes link

* fixes link

* fixes link

* fixes data source

* link fix

* fixes rbac link

* adds aliases

docs/sources/alerting/alerting-rules/manage-contact-points/_index.md

@@ -5,6 +5,7 @@ aliases:
   - ../../contact-points/edit-contact-point/
   - ../../contact-points/test-contact-point/
   - ../create-contact-point/
+  - alerting/manage-notifications/manage-contact-points/
 description: How to manage your contact points
 keywords:
   - grafana

docs/sources/alerting/alerting-rules/manage-contact-points/configure-integrations.md

@@ -1,4 +1,6 @@
 ---
+aliases:
+  - alerting/manage-notifications/manage-contact-points/configure-integrations/
 description: Configure integrations
 keywords:
   - Grafana

docs/sources/alerting/alerting-rules/manage-contact-points/webhook-notifier.md

@@ -2,6 +2,7 @@
 aliases:
   - ../contact-points/notifiers/webhook-notifier/
   - ../fundamentals/contact-points/webhook-notifier/
+  - alerting/manage-notifications/manage-contact-points/webhook-notifier/
 description: Configure the webhook notifier for notifications
 keywords:
   - grafana