Fixed some typehint

Author: Progi1984

src/PhpWord/Style/Cell.php

@@ -123,7 +123,7 @@ class Cell extends Border
      *
      * @var bool
      */
-    private $noWrap;
+    private $noWrap = true;
 
     /**
      * Get vertical align.
@@ -323,9 +323,10 @@ public function setUnit($value)
     /**
      * Set noWrap.
      *
-     * @param $value
+     * @param bool $value
+     * @return self
      */
-    public function setNoWrap($value)
+    public function setNoWrap(bool $value): self
     {
         $this->noWrap = $this->setBoolVal($value, true);
 
@@ -337,7 +338,7 @@ public function setNoWrap($value)
      *
      * @return bool
      */
-    public function getNoWrap()
+    public function getNoWrap(): bool
     {
         return $this->noWrap;
     }

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

@@ -88,10 +88,7 @@ public function write(): void
         $vMerge = $style->getVMerge();
         $xmlWriter->writeElementIf(null !== $gridSpan, 'w:gridSpan', 'w:val', $gridSpan);
         $xmlWriter->writeElementIf(null !== $vMerge, 'w:vMerge', 'w:val', $vMerge);
-
-        // noWrap
-        $noWrap = $style->getNoWrap();
-        $xmlWriter->writeElementIf(true === $noWrap, 'w:noWrap');
+        $xmlWriter->writeElementIf($style->getNoWrap(), 'w:noWrap');
 
         $xmlWriter->endElement(); // w:tcPr
     }