Update pub.dev package metadata.

Author: greenrobot-team

flutter_libs/pubspec.yaml

@@ -1,5 +1,5 @@
 name: objectbox_flutter_libs
-description: Flutter database for super-fast NoSQL ACID compliant object persistence. This package contains Flutter runtime libraries for ObjectBox.
+description: Superfast NoSQL Flutter / Dart database. This package contains Flutter runtime libraries for ObjectBox.
 repository: https://github.com/objectbox/objectbox-dart
 homepage: https://objectbox.io
 version: 1.2.0

generator/pubspec.yaml

@@ -1,5 +1,5 @@
 name: objectbox_generator
-description: ObjectBox binding code generator - finds annotated entities and adds them to the ObjectBox DB model.
+description: ObjectBox Flutter / Dart database binding code generator - finds annotated entities and adds them to the ObjectBox DB model.
 repository: https://github.com/objectbox/objectbox-dart
 homepage: https://objectbox.io
 version: 1.2.0

sync_flutter_libs/pubspec.yaml

@@ -1,5 +1,5 @@
 name: objectbox_sync_flutter_libs
-description: Flutter database for super-fast NoSQL ACID compliant object persistence. This package contains Flutter runtime libraries for ObjectBox, including ObjectBox Sync.
+description: Fast Flutter database for persisting Dart objects. This package contains Flutter runtime libraries for ObjectBox, including ObjectBox Sync.
 repository: https://github.com/objectbox/objectbox-dart
 homepage: https://objectbox.io
 version: 1.2.0