docs: update docs (#1837)

Author: elasticmachine

deploy/kubernetes/elastic-agent-managed-kubernetes.yaml

@@ -30,7 +30,7 @@ spec:
       dnsPolicy: ClusterFirstWithHostNet
       containers:
         - name: elastic-agent
-          image: docker.elastic.co/beats/elastic-agent:8.5.2
+          image: docker.elastic.co/beats/elastic-agent:8.5.3
           env:
             # Set to 1 for enrollment into Fleet server. If not set, Elastic Agent is run in standalone mode
             - name: FLEET_ENROLL

deploy/kubernetes/elastic-agent-standalone-kubernetes.yaml

@@ -668,7 +668,7 @@ spec:
       #        mountPath: /etc/elastic-agent/inputs.d
       containers:
         - name: elastic-agent-standalone
-          image: docker.elastic.co/beats/elastic-agent:8.5.2
+          image: docker.elastic.co/beats/elastic-agent:8.5.3
           args: [
             "-c", "/etc/elastic-agent/agent.yml",
             "-e",

version/docs/version.asciidoc

@@ -1,4 +1,4 @@
-:stack-version: 8.5.2
+:stack-version: 8.5.3
 :doc-branch: 8.5
 :go-version: 1.18.7
 :release-state: unreleased