Improve app description

manifest.json

@@ -1,11 +1,11 @@
 {
   "name": "VPN Client",
   "id": "vpnclient",
-  "version": "1.3.1",
   "packaging_format": 1,
+  "version": "1.3.1",
   "description": {
-    "en": "VPN Client",
-    "fr": "Client VPN"
+    "en": "Tunnel the internet traffic through a VPN",
+    "fr": "Fais passer le traffic internet à travers un VPN"
   },
   "license": "AGPL-3.0",
   "maintainer": {