[bot] [main] Automated version update (#2451)

Co-authored-by: Prometheus Operator Bot <prom-op-bot@users.noreply.github.com>

manifests/setup/0thanosrulerCustomResourceDefinition.yaml

@@ -3,7 +3,7 @@ kind: CustomResourceDefinition
 metadata:
   annotations:
     controller-gen.kubebuilder.io/version: v0.15.0
-    operator.prometheus.io/version: 0.74.0
+    operator.prometheus.io/version: 0.75.1
   name: thanosrulers.monitoring.coreos.com
 spec:
   group: monitoring.coreos.com
@@ -48,7 +48,14 @@ spec:
     name: v1
     schema:
       openAPIV3Schema:
-        description: ThanosRuler defines a ThanosRuler deployment.
+        description: |-
+          The `ThanosRuler` custom resource definition (CRD) defines a desired [Thanos Ruler](https://github.com/thanos-io/thanos/blob/main/docs/components/rule.md) setup to run in a Kubernetes cluster.
+
+
+          A `ThanosRuler` instance requires at least one compatible Prometheus API endpoint (either Thanos Querier or Prometheus services).
+
+
+          The resource defines via label and namespace selectors which `PrometheusRule` objects should be associated to the deployed Thanos Ruler instances.
         properties:
           apiVersion:
             description: |-