Fix some broken code from the restructuring

app/services/foreman_notification_send/sender_base.rb

@@ -3,7 +3,7 @@
 module ForemanNotificationSend
   class SenderBase
     def self.create_sender(backend:, **args)
-      return SenderMatrix.new(args) if backend == :matrix
+      return SenderMatrix.new(**args) if backend == :matrix
 
       raise NotImplementedError, 'Only Matrix backend implemented at the moment'
     end

app/services/foreman_notification_send/sender_matrix.rb

 # frozen_string_literal: true
 
-require 'matrix_sdk/api'
+require 'matrix_sdk'
 
 module ForemanNotificationSend
   class SenderMatrix < SenderBase
     def initialize(hs_url:, access_token:, room:, msgtype: 'm.notice')
+      super()
+
       room = MatrixSdk::MXID.new room unless room.is_a?(MatrixSdk::MXID)
       raise ArgumentError, 'room must be a Matrix room ID/Alias' unless room.room?
 
@@ -12,12 +14,10 @@ module ForemanNotificationSend
       @access_token = access_token
       @room_id = room
       @msgtype = msgtype
-
-      super
     end
 
     def send_notification(notification)
-      room.send_html(notification.to_html, notification.to_body, msgtype: @msgtype)
+      room.send_html(notification.to_html, notification.to_markdown, msgtype: @msgtype)
     end
 
     private
@@ -28,9 +28,9 @@ module ForemanNotificationSend
 
     def room
       @room ||= if @room_id.room_id?
-                  @client.ensure_room(@room_id)
+                  client.ensure_room(@room_id)
                 else
-                  @client.fetch_room(@room_id) || @client.join_room(@room_id)
+                  client.fetch_room(@room_id) || client.join_room(@room_id)
                 end
     end
   end