Bugfix for issue: xls file cause the exception during open by Xls reader PHPOffice#402

 codestyle fixes

Author: bayzhanov

tests/PhpSpreadsheetTests/Reader/XlsTest.php

@@ -8,7 +8,7 @@
 class XlsTest extends TestCase
 {
     /**
-     * Test load Xls file
+     * Test load Xls file.
      */
     public function testLoadXlsSample()
     {

tests/PhpSpreadsheetTests/Shared/OLEReadTest.php

@@ -25,4 +25,4 @@ public function testReadOleStreams()
             $ole->getStream($ole->documentSummaryInformation)
         );
     }
-}
+}