Update content.md (#4)

* Update content.md

* fix markdownfmt

Author: mladlow

vault/content.md

@@ -5,6 +5,8 @@ Vault is a tool for securely accessing secrets. A secret is anything that you wa
 -	[Vault documentation](https://www.vaultproject.io/)
 -	[Vault on GitHub](https://github.com/hashicorp/vault)
 
+> **Warning** Upcoming in Vault 1.14 we will stop publishing official Dockerhub images and publish only our Verified Publisher images. Users of Docker images should pull from “hashicorp/vault” instead of “vault”. More information is available on our [deprecation page](https://developer.hashicorp.com/vault/docs/deprecation).
+
 %%LOGO%%
 
 # Using the Container