docs(kubernetes): update core metadata (#260)

Author: aj-emerich

src/main/resources/metadata/core.yaml

@@ -1,6 +1,6 @@
 group: io.kestra.plugin.kubernetes.core
 name: "core"
-title: "Core"
+title: "Kubernetes Core"
 description: "Tasks that create pods and manage core workload execution on Kubernetes."
 body: "Use PodCreate with connection settings, namespace, image, command, env, and volume mounts to launch jobs, stream logs, and wait for completion with configurable timeouts; ideal for running containerized steps inside workflows."
 videos: []