Fix the type of the alert name
The alert name should be a valid label value, not a metric name.
@@ -98,7 +98,7 @@ labels:
The syntax for alerting rules is:
```
-# The name of the alert. Must be a valid metric name.
+# The name of the alert. Must be a valid label value.
alert: <string>
# The PromQL expression to evaluate. Every evaluation cycle this is
