[polari] app: Switch to Adw.AboutWindow

[Marge Bot <marge-bot src gnome org>]

commit 4ec0db3f1b4932b7a360ab9d507ed9233c18eb85
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Jul 7 19:59:01 2022 +0200

    app: Switch to Adw.AboutWindow
    
    libadwaita recently added an AboutDialog alternative that isn't
    just adaptive, but can also be more opinionated in its design
    language than GTK.
    
    Part-of: <https://gitlab.gnome.org/GNOME/polari/-/merge_requests/256>

 src/application.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/application.js b/src/application.js
index 4525fc82..a47e9fbc 100644
--- a/src/application.js
+++ b/src/application.js
@@ -824,7 +824,7 @@ class Application extends Adw.Application {
 
     _onShowAbout() {
         let aboutParams = {
-            authors: [
+            developers: [
                 'Florian Müllner <fmuellner gnome org>',
                 'William Jon McCann <william jon mccann gmail com>',
                 'Carlos Soriano <carlos soriano89 gmail com>',
@@ -853,16 +853,16 @@ class Application extends Adw.Application {
             comments: _('An Internet Relay Chat Client for GNOME'),
             copyright: 'Copyright © 2013-2018 The Polari authors',
             license_type: Gtk.License.GPL_2_0,
-            logo_icon_name: 'org.gnome.Polari',
+            application_icon: 'org.gnome.Polari',
             version: pkg.version,
-            website_label: _('Learn more about Polari'),
+            issue_url: 'https://gitlab.gnome.org/GNOME/polari/-/issues',
             website: 'https://wiki.gnome.org/Apps/Polari',
 
             transient_for: this.active_window,
             modal: true,
         };
 
-        const aboutDialog = new Gtk.AboutDialog(aboutParams);
+        const aboutDialog = new Adw.AboutWindow(aboutParams);
         aboutDialog.show();
     }