also add w:bCs

Author: troosan

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

@@ -104,6 +104,7 @@ private function writeStyle()
 
         // Bold, italic
         $xmlWriter->writeElementIf($style->isBold(), 'w:b');
+        $xmlWriter->writeElementIf($style->isBold(), 'w:bCs');
         $xmlWriter->writeElementIf($style->isItalic(), 'w:i');
         $xmlWriter->writeElementIf($style->isItalic(), 'w:iCs');