Fix administrative monitor dismiss

Author: jeromepochat

src/main/resources/org/jenkinsci/plugins/github_branch_source/app_credentials/MigrationAdminMonitor/message.jelly

@@ -1,7 +1,7 @@
 <?jelly escape-by-default='true'?>
 <j:jelly xmlns:j="jelly:core" xmlns:l="/lib/layout" xmlns:f="/lib/form">
     <div class="alert alert-warning">
-        <form id="${it.id}" method="post" action="${rootURL}/${it.url}/act" name="${it.id}">
+        <form method="post" action="${rootURL}/${it.url}/disable">
             <f:submit name="clear" value="${%Dismiss}"/>
         </form>
         ${%blurb}