Set writeAttribute return type (#2776)

Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>

Author: radarhere

docs/changes/1.x/1.5.0.md

@@ -6,6 +6,8 @@
 
 ### Bug fixes
 
+- Set writeAttribute return type by [@radarhere](https://github.com/radarhere) fixing [#2204](https://github.com/PHPOffice/PHPWord/issues/2204) in [#2776](https://github.com/PHPOffice/PHPWord/pull/2776)
+
 ### Miscellaneous
 
 ### Deprecations

src/PhpWord/Shared/XMLWriter.php

@@ -19,7 +19,6 @@
 namespace PhpOffice\PhpWord\Shared;
 
 use Exception;
-use ReturnTypeWillChange;
 
 /**
  * XMLWriter.
@@ -173,11 +172,8 @@ public function writeAttributeIf($condition, $attribute, $value): void
     /**
      * @param string $name
      * @param mixed $value
-     *
-     * @return bool
      */
-    #[ReturnTypeWillChange]
-    public function writeAttribute($name, $value)
+    public function writeAttribute($name, $value): bool
     {
         if (is_float($value)) {
             $value = json_encode($value);