Pubspec: Rename formatMessage to formattedMessage

pkgs/pubspec_parse/lib/src/errors.dart

diff --git a/pkgs/pubspec_parse/lib/src/errors.dart b/pkgs/pubspec_parse/lib/src/errors.dart
index 288553c..528e44a 100644
--- a/pkgs/pubspec_parse/lib/src/errors.dart
+++ b/pkgs/pubspec_parse/lib/src/errors.dart
@@ -68,7 +68,7 @@
 
   /// Returns [message] formatted with source information provided by
   /// [yamlNode].
-  String get formatMessage => yamlNode.span.message(message);
+  String get formattedMessage => yamlNode.span.message(message);
 
   @override
   String toString() => message;

pkgs/pubspec_parse/test/test_utils.dart

diff --git a/pkgs/pubspec_parse/test/test_utils.dart b/pkgs/pubspec_parse/test/test_utils.dart
index 0924b41..65000af 100644
--- a/pkgs/pubspec_parse/test/test_utils.dart
+++ b/pkgs/pubspec_parse/test/test_utils.dart
@@ -14,8 +14,8 @@
 
 Matcher _throwsParsedYamlException(String prettyValue) => throwsA(allOf(
     const isInstanceOf<ParsedYamlException>(),
-    new FeatureMatcher<ParsedYamlException>('formatMessage', (e) {
-      var message = e.formatMessage;
+    new FeatureMatcher<ParsedYamlException>('formattedMessage', (e) {
+      var message = e.formattedMessage;
       printOnFailure("Actual error format:\nr'''\n$message'''");
       _printDebugParsedYamlException(e);
       return message;