Merge pull request #1386 from a14n/fix-template

fix template
diff --git a/tool/rule.dart b/tool/rule.dart
index 6a7be39..c3766fe 100644
--- a/tool/rule.dart
+++ b/tool/rule.dart
@@ -123,7 +123,7 @@
 
 ''';
 
-class $className extends LintRule implements NodeLintRuleWithContext {
+class $className extends LintRule implements NodeLintRule {
   $className() : super(
           name: '$ruleName',
             description: _desc,