Removed @return void as not compatible with projects coding standard.

Author: hazington

src/PhpWord/Writer/Word2007/Element/TextBox.php

@@ -25,8 +25,6 @@ class TextBox extends Image
 {
     /**
      * Write element.
-     *
-     * @return void
      */
     public function write(): void
     {

src/PhpWord/Writer/Word2007/Style/TextBox.php

@@ -2,16 +2,13 @@
 /**
  * This file is part of PHPWord - A pure PHP library for reading and writing
  * word processing documents.
- *
  * PHPWord is free software distributed under the terms of the GNU Lesser
  * General Public License version 3 as published by the Free Software Foundation.
- *
  * For the full copyright and license information, please read the LICENSE
  * file that was distributed with this source code. For the full list of
  * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
  *
  * @see         https://github.com/PHPOffice/PHPWord
- *
  * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
  */
 
@@ -28,12 +25,11 @@ class TextBox extends Frame
 {
     /**
      * Writer inner margin.
-     * @return void
      */
     public function writeInnerMargin(): void
     {
         $style = $this->getStyle();
-        if (!$style instanceof TextBoxStyle || !$style->hasInnerMargins()) {
+        if (! $style instanceof TextBoxStyle || ! $style->hasInnerMargins()) {
             return;
         }
 
@@ -45,12 +41,11 @@ public function writeInnerMargin(): void
 
     /**
      * Writer border.
-     * @return void
      */
     public function writeBorder(): void
     {
         $style = $this->getStyle();
-        if (!$style instanceof TextBoxStyle) {
+        if (! $style instanceof TextBoxStyle) {
             return;
         }
         $xmlWriter = $this->getXmlWriter();