chore: rename vault to ssh certificate signer in the readme

README.md

@@ -73,7 +73,6 @@ Plugins add everything else. The official ones ship with Termix, and admins can
 | [File Manager](https://github.com/Termix-SSH/Plugin-File-Manager)           | Browse, edit and move files over SFTP, including straight from one server to another.                                           |
 | [Firewall](https://github.com/Termix-SSH/Plugin-Firewall)                   | Manage UFW, firewalld, nftables and iptables rules on your hosts over SSH, with lockout protection.                             |
 | [Fleets](https://github.com/Termix-SSH/Plugin-Fleets)                       | Group hosts into fleets and run commands, package actions and file transfers on all of them at once.                            |
-| [HashiCorp Vault](https://github.com/Termix-SSH/Plugin-Vault)               | Connect to hosts with short-lived SSH certificates signed by HashiCorp Vault.                                                   |
 | [Homepage](https://github.com/Termix-SSH/Plugin-Homepage)                   | A drag and drop widget page for your servers and services, plus service links for the dashboard.                                |
 | [Host Metrics](https://github.com/Termix-SSH/Plugin-Host-Metrics)           | Live CPU, memory, disk, network and GPU stats, plus tools to manage your hosts.                                                 |
 | [Host Status](https://github.com/Termix-SSH/Plugin-Host-Status)             | Shows if each host is online with a dot in the host list, checked by connecting to its port.                                    |
@@ -97,6 +96,7 @@ Plugins add everything else. The official ones ship with Termix, and admins can
 | [Simple Layout](https://github.com/Termix-SSH/Plugin-Simple-Layout)         | A simple Termix layout for small setups with a top bar, a Home screen and only the basics.                                      |
 | [Single sign-on](https://github.com/Termix-SSH/Plugin-SSO)                  | Sign in with any OpenID Connect provider, GitHub or Google.                                                                     |
 | [Snippets](https://github.com/Termix-SSH/Plugin-Snippets)                   | Save the commands you run often and run them in a terminal or on many hosts in one click.                                       |
+| [SSH Certificate Signer](https://github.com/Termix-SSH/Plugin-Vault)        | Connect to hosts with short-lived SSH certificates signed by HashiCorp Vault or OpenBao.                                        |
 | [SSH Terminal](https://github.com/Termix-SSH/Plugin-SSH-Terminal)           | SSH terminal sessions with tabs, split screen, history, macros and a local terminal in the desktop app.                         |
 | [Step CA](https://github.com/Termix-SSH/Plugin-Step-CA)                     | Connect to hosts with short-lived SSH certificates from a smallstep step-ca server.                                             |
 | [Sync](https://github.com/Termix-SSH/Plugin-Sync)                           | Sync the desktop app with one or more servers, and manage other Termix servers as remote sites from a master.                   |