bug #61106 Fix @var phpdoc (fabpot)

This PR was squashed before being merged into the 6.4 branch.

Discussion
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Fix `@var` phpdoc

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | yes
| New feature?  | no <!-- if yes, also update src/**/CHANGELOG.md -->
| Deprecations? | no <!-- if yes, also update UPGRADE-*.md and src/**/CHANGELOG.md -->
| Issues        | Fix #... <!-- prefix each issue number with "Fix #"; no need to create an issue if none exists, explain below -->
| License       | MIT

refs #61105

Commits
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732fbe80006 Fix `@var` phpdoc

Author: fabpot

Constraints/Composite.php

@@ -55,7 +55,7 @@ public function __construct(mixed $options = null, ?array $groups = null, mixed
 
         $this->initializeNestedConstraints();
 
-        /* @var Constraint[] $nestedConstraints */
+        /** @var Constraint[] $nestedConstraints */
         $compositeOption = $this->getCompositeOption();
         $nestedConstraints = $this->$compositeOption;
 
@@ -137,7 +137,7 @@ abstract protected function getCompositeOption(): string;
      */
     public function getNestedConstraints(): array
     {
-        /* @var Constraint[] $nestedConstraints */
+        /** @var Constraint[] $nestedConstraints */
         return $this->{$this->getCompositeOption()};
     }