Fix naming of app in header

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/gplay/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Nextcloud Talk application
+  ~ Nextcloud Talk - Android Client
   ~
   ~ SPDX-FileCopyrightText: 2017-2024 Nextcloud GmbH and Nextcloud contributors
   ~ SPDX-FileCopyrightText: 2022 Tim Krüger <t@timkrueger.me>

app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <!--
-  ~ Nextcloud Talk application
+  ~ Nextcloud Talk - Android Client
   ~
   ~ SPDX-FileCopyrightText: 2017-2024 Nextcloud GmbH and Nextcloud contributors
   ~ SPDX-FileCopyrightText: 2021-2023 Marcel Hibbe <dev@mhibbe.de>