fixup! [docs] imrpoev node visitoir

Author: TomasVotruba

resources/docs/creating-a-node-visitor.md

@@ -64,7 +64,7 @@ fianl class SomeRector extends AbstractRector
 {
     public function refactor(Node $node): ?Node
     {
-        if ($node->getAttribute(AssignAwareNodeVisitor::IS_PART_OF_ASSIGN) === true) {
+        if ($node->getAttribute(AssignAwareNodeVisitor::IS_PART_OF_ASSIGN)) {
             // we know node is part of assign
         }
 

src/Documentation/DocumentationMenuFactory.php

@@ -72,7 +72,7 @@ public function create(): array
                     'writing-tests-for-custom-rule',
                     'Writing Tests For Custom Rule'
                 ),
-                $this->documentationMenuItemFactory->createSection('creating-a-node-visitor', 'Creating Node Visitor'),
+                $this->documentationMenuItemFactory->createSection('creating-a-node-visitor', 'Creating Node Visitor', true),
                 $this->documentationMenuItemFactory->createSection('how-to-run-on-php-53', 'Run on PHP 5.3'),
                 $this->documentationMenuItemFactory->createSection(
                     'https://leanpub.com/rector-the-power-of-automated-refactoring',