update image sizes

hugo/content/administration/stopUserRegistration.md

@@ -7,11 +7,11 @@ title: Stop user registration
 For some reason, you may want to temporarily disable new user registrations from kthcloud. This is how it was done last time it was needed.
 
 1. Log into kthcloud iam https://iam.cloud.cbh.kth.se/ admin panel
-<img src="../../images/cbhcloud-realm.png" width="80%">
+<img src="../../images/cbhcloud-realm.png" height="300px">
 2. Visit the identity provider section, and click on the Login with KTH option
-<img src="../../images/idp-kth.png" width="80%">
+<img src="../../images/idp-kth.png" height="400px">
 3. Scroll down to Advanced settings, First login flow override, and select the `deny new users` flow.
-<img src="../../images/idp-flow.png" width="80%">
+<img src="../../images/idp-flow.png" height="400px">
 
 The flows can be edited in keycloak admin panel's `Authentication` tab.