[observe] use consistent comment style

pkg/observe/lib/src/to_observable.dart

Index: pkg/observe/lib/src/to_observable.dart
diff --git a/pkg/observe/lib/src/to_observable.dart b/pkg/observe/lib/src/to_observable.dart
index 4684935f6cd5f74475c8130dfc16efd1cedec2e5..931fb0404ebd5fbb3d46e1d93fffd82e143eb235 100644
--- a/pkg/observe/lib/src/to_observable.dart
+++ b/pkg/observe/lib/src/to_observable.dart
@@ -6,22 +6,20 @@ library observe.src.to_observable;
 
 import 'package:observe/observe.dart';
 
-/**
- * Converts the [Iterable] or [Map] to an [ObservableList] or [ObservableMap],
- * respectively. This is a convenience function to make it easier to convert
- * literals into the corresponding observable collection type.
- *
- * If [value] is not one of those collection types, or is already [Observable],
- * it will be returned unmodified.
- *
- * If [value] is a [Map], the resulting value will use the appropriate kind of
- * backing map: either [HashMap], [LinkedHashMap], or [SplayTreeMap].
- *
- * By default this performs a deep conversion, but you can set [deep] to false
- * for a shallow conversion. This does not handle circular data structures.
- * If a conversion is peformed, mutations are only observed to the result of
- * this function. Changing the original collection will not affect it.
- */
+/// Converts the [Iterable] or [Map] to an [ObservableList] or [ObservableMap],
+/// respectively. This is a convenience function to make it easier to convert
+/// literals into the corresponding observable collection type.
+///
+/// If [value] is not one of those collection types, or is already [Observable],
+/// it will be returned unmodified.
+///
+/// If [value] is a [Map], the resulting value will use the appropriate kind of
+/// backing map: either [HashMap], [LinkedHashMap], or [SplayTreeMap].
+///
+/// By default this performs a deep conversion, but you can set [deep] to false
+/// for a shallow conversion. This does not handle circular data structures.
+/// If a conversion is peformed, mutations are only observed to the result of
+/// this function. Changing the original collection will not affect it.
 // TODO(jmesserly): ObservableSet?
 toObservable(value, {bool deep: true}) =>
     deep ? _toObservableDeep(value) : _toObservableShallow(value);