Alerting: Update 'Create alert' to 'New alert rule' in the panel and docs (#76950)

* Update 'Create alert' to 'New alert rule' in the panel and docs

* Fix test

docs/sources/tutorials/create-alerts-with-logs/index.md

@@ -44,7 +44,7 @@ In these steps you'll create an alert and define an expression to evaluate. Thes
 
 ### Create a Grafana-managed alert
 
-1. Navigate in Grafana to **Alerting**, then to **Alert Rules** and click **+ Create alert rule**.
+1. Navigate in Grafana to **Alerting**, then to **Alert Rules** and click **+ New alert rule**.
 1. Choose **Grafana Managed Alert** to create an alert that uses expressions.
 1. Select your Loki datasource from the drop-down.
 1. Enter the alert query in the query editor, switch to **code** mode in the top right corner of the editor to paste the query below:

docs/sources/tutorials/grafana-fundamentals/index.md

@@ -328,7 +328,7 @@ We have now created a dummy webhook endpoint and created a new Alerting Contact
 Now that Grafana knows how to notify us, it's time to set up an alert rule:
 
 1. In the sidebar, click **Alert rules**.
-1. Click **Create alert rule**.
+1. Click **New alert rule**.
 1. In section **1**, name the rule `fundamentals-test`.
 1. For section **2**, select **Grafana Managed Alert** as the rule type. Next, find query box **A**. Choose your Prometheus datasource and enter the same query that we used in our earlier panel: `sum(rate(tns_request_duration_seconds_count[5m])) by(route)`. Click **Run queries**. You should see some data in the graph.
 1. Now scroll down to query box **B**. Change the operation from **Reduce** to **Classic condition**. [You can read more about classic and multi-dimensional conditions here](/docs/grafana/latest/alerting/unified-alerting/alerting-rules/create-grafana-managed-rule/#single-and-multi-dimensional-rule). For conditions enter the following: `WHEN last() OF A IS ABOVE 0.2`. Delete query **C**.