Update README.md

Author: Snuffy2

README.md

@@ -14,6 +14,9 @@ Join `OPNsense` with `Home Assistant`!
 
 `hass-opnsense` uses the OPNsense [REST API](https://docs.opnsense.org/development/api.html) to integrate OPNsense with Home Assistant. 
 
+**With OPNsense Firmware 26.1.1+, a plugin is no longer needed on the OPNsense Router.**
+
+
 A Discord server to discuss the integration is available, please click the Discord badge at the beginning of the page for the invite link.
 
 ## Table of Contents
@@ -48,7 +51,7 @@ This integration **replaces** the built-in OPNsense integration which only provi
 
 ### OPNsense Plugin *(deprecated)*
 
-With OPNsense Firmware of 26.1.1+, a plugin is *no longer needed* on the OPNsense Router.
+With OPNsense Firmware 26.1.1+, a plugin is **no longer needed** on the OPNsense Router.
 
 <details>
 <summary><h4>OPNsense Firmware < 26.1.1</h4></summary>