[connections] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit ffccea440609a719bbd294fbeae6340a7079ba91
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jul 4 17:57:01 2021 +0200

    Update POTFILES.in

 po/POTFILES.in | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 93291e7..ec7fe5b 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,16 +1,21 @@
+# List of source files containing translatable strings.
+# Please keep this file sorted alphabetically.
 data/org.gnome.Connections.appdata.xml.in
 data/org.gnome.Connections.desktop.in
 data/org.gnome.Connections.xml
 src/actions-popover.vala
 src/application.vala
+src/assistant.vala
 src/connection.vala
 src/display-view.vala
+src/onboarding-dialog.vala
 src/rdp-connection.vala
 src/topbar.vala
 src/ui/assistant.ui
 src/ui/auth-notification.ui
 src/ui/empty-view.ui
-src/ui/properties.ui
+src/ui/onboarding-dialog.ui
+src/ui/rdp-preferences.ui
 src/ui/topbar.ui
+src/ui/vnc-preferences.ui
 src/vnc-connection.vala
-src/vnc-properties-dialog.vala