Fix doc comment issues reported by pub.dev (#882)
diff --git a/pkgs/args/README.md b/pkgs/args/README.md
index 05f36eb..b8f5ee2 100644
--- a/pkgs/args/README.md
+++ b/pkgs/args/README.md
@@ -446,6 +446,7 @@
[ArgParser]: https://pub.dev/documentation/args/latest/args/ArgParser/ArgParser.html
[ArgParserException]: https://pub.dev/documentation/args/latest/args/ArgParserException-class.html
[ArgResults]: https://pub.dev/documentation/args/latest/args/ArgResults-class.html
+[ArgumentError]: https://api.dart.dev/dart-core/ArgumentError-class.html
[CommandRunner]: https://pub.dev/documentation/args/latest/command_runner/CommandRunner-class.html
[Command]: https://pub.dev/documentation/args/latest/command_runner/Command-class.html
[UsageException]: https://pub.dev/documentation/args/latest/command_runner/UsageException-class.html
diff --git a/pkgs/async/lib/src/stream_group.dart b/pkgs/async/lib/src/stream_group.dart
index 79f057f..e02afcd 100644
--- a/pkgs/async/lib/src/stream_group.dart
+++ b/pkgs/async/lib/src/stream_group.dart
@@ -124,9 +124,9 @@
/// Adds [stream] as a member of this group.
///
- /// Any events from [stream] will be emitted through [this.stream]. If this
- /// group has a listener, [stream] will be listened to immediately; otherwise
- /// it will only be listened to once this group gets a listener.
+ /// Any events from [stream] will be emitted through [StreamGroup.stream]. If
+ /// this group has a listener, [stream] will be listened to immediately;
+ /// otherwise it will only be listened to once this group gets a listener.
///
/// If this is a single-subscription group and its subscription has been
/// canceled, [stream] will be canceled as soon as its added. If this returns
diff --git a/pkgs/fixnum/lib/src/int32.dart b/pkgs/fixnum/lib/src/int32.dart
index 8045bc1..39acebb 100644
--- a/pkgs/fixnum/lib/src/int32.dart
+++ b/pkgs/fixnum/lib/src/int32.dart
@@ -8,7 +8,7 @@
import 'intx.dart';
import 'utilities.dart' as u;
-/// An immutable 32-bit signed integer, in the range [-2^31, 2^31 - 1].
+/// An immutable 32-bit signed integer, in the range `[-2^31, 2^31 - 1]`.
/// Arithmetic operations may overflow in order to maintain this range.
class Int32 implements IntX {
/// The maximum positive value attainable by an [Int32], namely
diff --git a/pkgs/fixnum/lib/src/int64.dart b/pkgs/fixnum/lib/src/int64.dart
index bbfcbd9..cb0e1cc 100644
--- a/pkgs/fixnum/lib/src/int64.dart
+++ b/pkgs/fixnum/lib/src/int64.dart
@@ -13,7 +13,7 @@
import 'intx.dart';
import 'utilities.dart' as u;
-/// An immutable 64-bit signed integer, in the range [-2^63, 2^63 - 1].
+/// An immutable 64-bit signed integer, in the range `[-2^63, 2^63 - 1]`.
/// Arithmetic operations may overflow in order to maintain this range.
class Int64 implements IntX {
// A 64-bit integer is represented internally as three non-negative
