fix: join-us page not receiving iot membership styles

content/membership/join-us/_index.md

@@ -2,7 +2,7 @@
 title: "Join Us"
 seo_title: "Join Eclipse IoT Working Group"
 keywords: ["join Eclipse IoT", "Eclipse IoT", "IoT solutions", "IoT architecture", "open source software", "working group"]
-container: "container-fluid"
+container: "container-fluid iot-membership-container"
 ---
 
 Is your organisation ready to become a member?