Update content/nginx-one/how-to/certificates/manage-certificates.md

Co-authored-by: Sylvia Wang <139922338+sylwang@users.noreply.github.com>

Author: 2 people

content/nginx-one/how-to/certificates/manage-certificates.md

@@ -133,7 +133,7 @@ The Export option supports exports of basic certification file information to a
 
 ## Deployed certificates
 
-A deployed certificate is associated a specific Instance or Config Sync Gruop. That certificate may be Managed or Unmanaged.
+A deployed certificate is associated with a specific Instance or Config Sync Gruop. That certificate may be Managed or Unmanaged.
 
 ## Add a new certificate or bundle