Fixup manifest

CloudronManifest.json

@@ -1,10 +1,10 @@
 {
   "id": "org.matrix.synapse",
-  "title": "Synapse: Matrix homeserver without Riot",
+  "title": "An Open network for secure, decentralized communication",
   "author": "Matrix synapse authors",
   "description": "file://DESCRIPTION.md",
   "changelog": "file://CHANGELOG",
-  "tagline": "standalone matrix server",
+  "tagline": "Matrix homeserver",
   "version": "0.4.1",
   "healthCheckPath": "/",
   "httpPort": 8008,
@@ -21,7 +21,11 @@
   "contactEmail": "support@cloudron.io",
   "icon": "logo.png",
   "tags": [
-    "im", "collaboration", "voip", "videochat"
+    "im", "collaboration", "voip", "videochat", "chat"
   ],
-  "mediaLinks": [ ]
+  "mediaLinks": [ ],
+  "changelog": "file://CHANGELOG",
+  "postInstallMessage": "file://POSTINSTALL.md",
+  "minBoxVersion": "5.1.4",
+  "documentationUrl": "https://cloudron.io/documentation/apps/synapse/"
 }