[flutter_lints] Fix readme (#394)

diff --git a/packages/flutter_lints/CHANGELOG.md b/packages/flutter_lints/CHANGELOG.md
index f5e0977..2d31e20 100644
--- a/packages/flutter_lints/CHANGELOG.md
+++ b/packages/flutter_lints/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.4
+
+* Small update to readme
+
 ## 1.0.3
 
 * More small updates to readme
diff --git a/packages/flutter_lints/README.md b/packages/flutter_lints/README.md
index c0eef11..acba0b5 100644
--- a/packages/flutter_lints/README.md
+++ b/packages/flutter_lints/README.md
@@ -14,7 +14,7 @@
 ## Usage
 
 Flutter apps, packages, and plugins created with `flutter create` starting with
-Flutter version 2.xx are already set up to use the lints defined in this
+Flutter version 2.3.0 are already set up to use the lints defined in this
 package. Entities created before that version can use these lints by following
 these instructions:
 
diff --git a/packages/flutter_lints/pubspec.yaml b/packages/flutter_lints/pubspec.yaml
index 23df97a..5a1a944 100644
--- a/packages/flutter_lints/pubspec.yaml
+++ b/packages/flutter_lints/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Recommended lints for Flutter apps, packages, and plugins to encourage good coding practices.
 repository: https://github.com/flutter/packages/tree/master/packages/flutter_lints
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+flutter_lints%22
-version: 1.0.3
+version: 1.0.4
 
 environment:
   sdk: '>=2.12.0 <3.0.0'