Merge pull request #261585 from AndreiBarbu95/patch-9

Update certificate-rotation.md

Author: prmerger-automator[bot]

articles/aks/certificate-rotation.md

@@ -54,7 +54,7 @@ Microsoft maintains all certificates mentioned in this section, except for the c
 * Check the expiration date of the API server certificate using the following `curl` command.
 
     ```console
-    curl https://{apiserver-fqdn} -k -v 2>&1 |grep expire
+    curl https://{apiserver-fqdn} -k -v 2>&1 | grep expire
     ```
 
 ### Check VMAS agent node certificate expiration date